CA2022275A1 - Powder granule sample inspection apparatus - Google Patents
Powder granule sample inspection apparatusInfo
- Publication number
- CA2022275A1 CA2022275A1 CA 2022275 CA2022275A CA2022275A1 CA 2022275 A1 CA2022275 A1 CA 2022275A1 CA 2022275 CA2022275 CA 2022275 CA 2022275 A CA2022275 A CA 2022275A CA 2022275 A1 CA2022275 A1 CA 2022275A1
- Authority
- CA
- Canada
- Prior art keywords
- powder
- sampled
- powder granules
- inspection apparatus
- granules
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 239000000843 powder Substances 0.000 title claims abstract description 67
- 239000008187 granular material Substances 0.000 title claims abstract description 65
- 238000007689 inspection Methods 0.000 title claims abstract description 39
- 239000002245 particle Substances 0.000 claims abstract description 21
- 238000005070 sampling Methods 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- ZDQWESQEGGJUCH-UHFFFAOYSA-N Diisopropyl adipate Chemical compound CC(C)OC(=O)CCCCC(=O)OC(C)C ZDQWESQEGGJUCH-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002674 ointment Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- -1 pharmaceutical Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A powder granule sample inspection apparatus having a sampling device for sampling powder granules together with air from an on-line tube, a separator for separating sampled powder granules from the air, a feeder for feeding the sampled powder granules, a transfer device for transferring the sampled powder granules fed, an adjuster for making the powder granules transferred as one layer, and an inspector for inspecting the sampled powder granules whether or not they contain metallic foreign particles, for inspecting moisture ratio of the sampled powder granules, and for measuring the number and size of colored foreign particles or the like.
A powder granule sample inspection apparatus having a sampling device for sampling powder granules together with air from an on-line tube, a separator for separating sampled powder granules from the air, a feeder for feeding the sampled powder granules, a transfer device for transferring the sampled powder granules fed, an adjuster for making the powder granules transferred as one layer, and an inspector for inspecting the sampled powder granules whether or not they contain metallic foreign particles, for inspecting moisture ratio of the sampled powder granules, and for measuring the number and size of colored foreign particles or the like.
Description
2~2~
- BACKGROUND OF THE INVENTION
Field of the Invention The present invention relates generally to a powder granule sample inspection apparatus that continuously and automatically conducts inspection of plural categories on samples of powder or granule such as pharmaceutical or plastic raw materials or the like.
Description of the Prior Art ,:
Conventionally, the inspection of samples of powders or granules such as pharmaceutical, plastic material or the like, for example, to detect the existence or not of metallic foreign particles mixed into the powders or granules, the number and size of coloured foreign particles mixed into the powders or granules, inspection of moisture ratio thereof, etc were respectively conducted by manual means. Accordingly, in order to conduct plural categories of inspection as to the samples of powders and so on, manual labour and time were consumed whereas sample characteristics may change during the course of such inspection of a long period of time so that the inSpection data thus obtained would carry inferior data precision.
'~'.:
~BJECTS-AN~ SUMMARY OF THE;INVENTION
.
Therefore, it is an object of the present invention to propose a powder granule sample inspection apparatus that continuously and automatically will conduct the plural categories of inspection on the samples of powder or granule through which inspection data wikh high accuracy can be 2~222, 1~ :
obtained.
According to an aspect of the present invention there is a powder granule sample inspection apparatus, comprising:
a) a sampling means for sampling powder granules together with air;
b) separating means for separating sampled powder granules from air;
c) feeding means for feeding the sampled powder granules;
d) transferring means for transferring the sampled powder granules fed;
e~ means for-making the powder granules transferred as one layer; and f) inspection means for inspecting the sampled powder granules.
The additional and other objects, features and advantages of the present invention will become apparent from the following description taken in con~unction with the accompanied drawings.
,.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a partial side sectional diagram showing an embodiment of the powder granule sample inspection apparatus according tojthe present invention;
Fig. 2 is a partial front sectional diagram of the same; and . .
Fig. 3 is a top view of the same.
~;:
DESCRIPTION OF THE PREFERRED EMBODIMENT 2 ~ 2 2 2 ~ ~
... . . _ An embodiment of the present invention will be explained hereunder in reference with the drawings.
Fig. 1 shows a partial sectional view showing an embodiment of a powder granule sample inspection apparatus according to the present invention, Fig. 2 shows its partial front section, and Fig. 3 shows the top view of the same.
In this embodiment of the powder granule sample inspection apparatus, the inspection for the powder granule sample is conducted under closed and clean atmosphere where dust or foreign particles or the like do not invade into the sample from outside.
In the Fig. 1, 1 designates a frame that forms the main frame of this apparatus, whereas at the end portion of the top surface of the apparatus, a first hopper 2 protudes downwards through the frame 1 and a cyclone 3 is connected to the upper opening of hopper 2 as it is installed above same. Loadcell 9 contacts the side o the first hopper 2 and loadcell 9 is secured onto frame 1.
To the side portion of cyclone 3, one end of a sample transfer tube 4 is communicated through an ejection nozzle 6. Further, to the other end of the sample transfer tube 4, ~-.
there is communicated a sampling nozzle (not shown in the drawings) that samples the powder or granule (for example, poly vinyl chloride powders or pellets) from an on-line (not shown on the drawings) and a close and/or open valve S is installed at midway of transfer tube 4. Also, a pneumatic blow-out pipe 8 is connected to the top part of cyclone 3.
From the bottom outlet of the first hopper 2, ~
::
_3_ :
2~22~
connection tube 12 extends straight downwards and is connected to a 2nd hopper 14. At the upper end portion of connection tube 12, ball valve lO with valve controller 11 which adjusts the valve 10 are installed, and in the passway inside the connection tube 12, while a metal detector 13 is installed to inspect the existence or not of metallic foreign particles, for example, magnetic foreign particles within the samples that are dropped down inside the connection tube 12. Further, a tube portion 12a of the connection tube 12 near the outlet of the metal detector 13 is made of a bellows. 16 designates the cap of the 2nd hopper 14.
The bottom outlet of the 2nd hopper 14 is positioned on the top of one end of trough 17, whereas the other end of trough 17 is positioned about the top of the starting point of belt conveyer 20. Also, under the trough 17 an electro-magnetic coil 18 which provides trough 17 with vibration is installed.
Above the start point of belt conveyer 20, scraper 19 which functions to evenly spread the conveyed sample as a constant width layer is installed. Further, above belt conveyer 20, there are provided a moisture gauge 21 which ~--measures the moisture ratio of the conveyed sample and, a strobo diffusion hood 22 that intermittently irradiates upon the sample as well as~television camera 23 that!photosenses ;
the sample in order to detect the number and size of the coloured foreign particles contained in the sample. In this ;~
embodiment, the belt conveyer 20 comes to an end at a short distance from where it passes under the television camera 23. Under the belt conveyer 20, a third hopper 24 is installed. 25 denotes khe outlet of the same. 2~% 2~J~
26 designates a control panel which controls the function of the entire apparatus, 27 a monitor which displays the image as photosensed by television camera 23, and 28 moisture gauge controller which controIs the moisture gauge 21 while at the same time indicates the moisture ratio thus detected. 29 designates an image signal processor, and 30 an image analyzer which analyzes the video signals from the television camera 23 to determine the number and size of the coloured foreign particles. 31 denotes a stroboscope which controls the cycles of the strobo diffusion hood 22 etc., and 32 a power source filter that adjusts the power source.
Now then, the function of this embodiment of the present invention shall be explained.
At the occasion when the powder granule that flow the on-line is to be sampled, valve 5 is opened, and the sampled powder granules by the sampling nozzle (not shown on drawings) is transferred through sample transfer tube 4 with the pneumatic flow. The powder or granule sampled is blown into cyclone 3 from the blow out nozzle 6, and is separated from air in the cyclone 3 during the cyclonic action thereof. The separated powder granule is accumulated at the first hopper 2 while the air is outlet from the air blowout ~;~
tube 8. The accumuIa`ted powder granule is weighed by loadcell 9 whereas, whenever a certain volume of the powder granule is accumulated, valve 5 closes and ball valve 10 is controlled by the valve controller 11 so that a certain volume of the powcler granule as necessary for the inspection is continuously ejected from the first hopper 2 to drop down .. . .. .... .. . . , , ~ . . . . .. . . . .
20~2J2 inside the connection tube 12. At this time, the magnetic foreign particles contained within the powder granule is inspected for the existence or not by the metal detector 13.
The dropped powder granule accumulates inside the second hopper 14. At this time, the air inside the second hopper 14 is exhausted from portion 12a of connection tube 12 formed of the bellows. The powder granule that accumulates in the second hopper 14 is cut out at a constant volume by the trough 17 which is vibrated by electro-magnetic coil 18 and is supplied onto the belt conveyer 20. The loaded powder granule is evenly spread on the surface of the conveyer 20 by scraper 19 to be a layer of a constant thickness.
The powder granule that is transferred on the belt conveyer 20 in the layer of a constant thickness is measured for its moisture content by the moisture gauge 21 while passing under the same, and then consecutively is intermittently irradiated by the strobo diffusion hood 22 and is photosenced by the television camera 23 while passing under the same, so that the number and size of the coloured foreign particles within the powder granule are measured.
Thereafter, the conveyed powder granule is dropped into the 3rd hopper 24 to be accumulated therein.
The related data to the existence or not of magnetic foreign material within the powder granule, tha moisture ratio of the powder granule as well as the number and size of coloured foreign particles contained in the powder granule are memorized in the computer (not shown in drawin~s) and the powder granule is then feedback to the on-line to be used.
2~22?J7~
; A practical example of the powder granule inspection as conducted by the apparatus of the present invention is hereunder illustrated.
Under the conditions of;
Power source - AClOOV, 50/60 Hz, 40A
Pneumatic source - 4 Kg/cm2, 200 NQ/min.
With the inspected subject being polyvinyl chloride resin powder ~diameter 80 - 150 microns), (1) Coloured foreign particles Foreign particles of black, brown and yellow as appearance on their surfaces diameter larger then 100 microns (2) Magnetic foreign particle larger then SS dia. 200 microns, SUS dia. 700 microns ~3) Moisture content Min. O - 0.1% Max O - 95% ~ 0.5%
were the degree of precision on the inspection data that was obtained.
As above stated, according to the powder granule sample inspection apparatus of the present invention, it is possible to continuously and automatically conduct the inspection of the existence or not of magnetic foreign particles mixed into the powder granule sampled, the moisture content ratio of the sample, as well as the number and size of coloured~foreign particles within the sample of -the powder granule in a streamed manner.
Further, since such multi categorized inspections can be continuously and automatically conducted, it is possible to eliminate the manpower and also obtain inspection data of high precision. Especially, owing to the sample on the : , ,.
2~2'~.3 surface of the belt conveyer 20 being accurately sprea~ into a constant thickness layer by the scraper l9, the moisture content ratio of the sample, and the number and size of the coloured foreign particles in the sample are measured as inspection data with high precision that are obtained.
Further, since the same lot of samples are as they are inspected in the plural items mentioned above within a relatively short time, which is to say, the short time in which the samples are dropping through connection tube 12 and conveyed on belt conveyer 20, the sample change in quality is prevented so that a high precisioned inspection data for one lot of samples is available.
Also, the present invention is not limited to the inspection of such items as the moisture content ratio of the sample and the number and size of coloured foreign particles within the sample while the sample is above the belt conveyer 20, it may be applied to cases where at least one of the above items be inspected.
Further, the inspection items need not be limited to ;
those explained above, but the present invention also may be applied to the inspections of grain size, melting point or nominal gravity, etc.
The metal detector 13 can detect not only magnetic foreignal material but also metallic foreign material such as non-magnetic material, for instance.
Further, in lieu of the trough 17, a screw conveyer or the like and in lieu of the belt conveyer, a rotary table may be used.
It will be apparent that many modifications and variations could be effected by one skilled in the art ~ without departing from the spirits or the scope of the n2~22 concepts of the present invention so that the spirits or scope of the invention should be determined by the appended claims only.
.; , .
~:
~ :~
:
_g_ ~
- BACKGROUND OF THE INVENTION
Field of the Invention The present invention relates generally to a powder granule sample inspection apparatus that continuously and automatically conducts inspection of plural categories on samples of powder or granule such as pharmaceutical or plastic raw materials or the like.
Description of the Prior Art ,:
Conventionally, the inspection of samples of powders or granules such as pharmaceutical, plastic material or the like, for example, to detect the existence or not of metallic foreign particles mixed into the powders or granules, the number and size of coloured foreign particles mixed into the powders or granules, inspection of moisture ratio thereof, etc were respectively conducted by manual means. Accordingly, in order to conduct plural categories of inspection as to the samples of powders and so on, manual labour and time were consumed whereas sample characteristics may change during the course of such inspection of a long period of time so that the inSpection data thus obtained would carry inferior data precision.
'~'.:
~BJECTS-AN~ SUMMARY OF THE;INVENTION
.
Therefore, it is an object of the present invention to propose a powder granule sample inspection apparatus that continuously and automatically will conduct the plural categories of inspection on the samples of powder or granule through which inspection data wikh high accuracy can be 2~222, 1~ :
obtained.
According to an aspect of the present invention there is a powder granule sample inspection apparatus, comprising:
a) a sampling means for sampling powder granules together with air;
b) separating means for separating sampled powder granules from air;
c) feeding means for feeding the sampled powder granules;
d) transferring means for transferring the sampled powder granules fed;
e~ means for-making the powder granules transferred as one layer; and f) inspection means for inspecting the sampled powder granules.
The additional and other objects, features and advantages of the present invention will become apparent from the following description taken in con~unction with the accompanied drawings.
,.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a partial side sectional diagram showing an embodiment of the powder granule sample inspection apparatus according tojthe present invention;
Fig. 2 is a partial front sectional diagram of the same; and . .
Fig. 3 is a top view of the same.
~;:
DESCRIPTION OF THE PREFERRED EMBODIMENT 2 ~ 2 2 2 ~ ~
... . . _ An embodiment of the present invention will be explained hereunder in reference with the drawings.
Fig. 1 shows a partial sectional view showing an embodiment of a powder granule sample inspection apparatus according to the present invention, Fig. 2 shows its partial front section, and Fig. 3 shows the top view of the same.
In this embodiment of the powder granule sample inspection apparatus, the inspection for the powder granule sample is conducted under closed and clean atmosphere where dust or foreign particles or the like do not invade into the sample from outside.
In the Fig. 1, 1 designates a frame that forms the main frame of this apparatus, whereas at the end portion of the top surface of the apparatus, a first hopper 2 protudes downwards through the frame 1 and a cyclone 3 is connected to the upper opening of hopper 2 as it is installed above same. Loadcell 9 contacts the side o the first hopper 2 and loadcell 9 is secured onto frame 1.
To the side portion of cyclone 3, one end of a sample transfer tube 4 is communicated through an ejection nozzle 6. Further, to the other end of the sample transfer tube 4, ~-.
there is communicated a sampling nozzle (not shown in the drawings) that samples the powder or granule (for example, poly vinyl chloride powders or pellets) from an on-line (not shown on the drawings) and a close and/or open valve S is installed at midway of transfer tube 4. Also, a pneumatic blow-out pipe 8 is connected to the top part of cyclone 3.
From the bottom outlet of the first hopper 2, ~
::
_3_ :
2~22~
connection tube 12 extends straight downwards and is connected to a 2nd hopper 14. At the upper end portion of connection tube 12, ball valve lO with valve controller 11 which adjusts the valve 10 are installed, and in the passway inside the connection tube 12, while a metal detector 13 is installed to inspect the existence or not of metallic foreign particles, for example, magnetic foreign particles within the samples that are dropped down inside the connection tube 12. Further, a tube portion 12a of the connection tube 12 near the outlet of the metal detector 13 is made of a bellows. 16 designates the cap of the 2nd hopper 14.
The bottom outlet of the 2nd hopper 14 is positioned on the top of one end of trough 17, whereas the other end of trough 17 is positioned about the top of the starting point of belt conveyer 20. Also, under the trough 17 an electro-magnetic coil 18 which provides trough 17 with vibration is installed.
Above the start point of belt conveyer 20, scraper 19 which functions to evenly spread the conveyed sample as a constant width layer is installed. Further, above belt conveyer 20, there are provided a moisture gauge 21 which ~--measures the moisture ratio of the conveyed sample and, a strobo diffusion hood 22 that intermittently irradiates upon the sample as well as~television camera 23 that!photosenses ;
the sample in order to detect the number and size of the coloured foreign particles contained in the sample. In this ;~
embodiment, the belt conveyer 20 comes to an end at a short distance from where it passes under the television camera 23. Under the belt conveyer 20, a third hopper 24 is installed. 25 denotes khe outlet of the same. 2~% 2~J~
26 designates a control panel which controls the function of the entire apparatus, 27 a monitor which displays the image as photosensed by television camera 23, and 28 moisture gauge controller which controIs the moisture gauge 21 while at the same time indicates the moisture ratio thus detected. 29 designates an image signal processor, and 30 an image analyzer which analyzes the video signals from the television camera 23 to determine the number and size of the coloured foreign particles. 31 denotes a stroboscope which controls the cycles of the strobo diffusion hood 22 etc., and 32 a power source filter that adjusts the power source.
Now then, the function of this embodiment of the present invention shall be explained.
At the occasion when the powder granule that flow the on-line is to be sampled, valve 5 is opened, and the sampled powder granules by the sampling nozzle (not shown on drawings) is transferred through sample transfer tube 4 with the pneumatic flow. The powder or granule sampled is blown into cyclone 3 from the blow out nozzle 6, and is separated from air in the cyclone 3 during the cyclonic action thereof. The separated powder granule is accumulated at the first hopper 2 while the air is outlet from the air blowout ~;~
tube 8. The accumuIa`ted powder granule is weighed by loadcell 9 whereas, whenever a certain volume of the powder granule is accumulated, valve 5 closes and ball valve 10 is controlled by the valve controller 11 so that a certain volume of the powcler granule as necessary for the inspection is continuously ejected from the first hopper 2 to drop down .. . .. .... .. . . , , ~ . . . . .. . . . .
20~2J2 inside the connection tube 12. At this time, the magnetic foreign particles contained within the powder granule is inspected for the existence or not by the metal detector 13.
The dropped powder granule accumulates inside the second hopper 14. At this time, the air inside the second hopper 14 is exhausted from portion 12a of connection tube 12 formed of the bellows. The powder granule that accumulates in the second hopper 14 is cut out at a constant volume by the trough 17 which is vibrated by electro-magnetic coil 18 and is supplied onto the belt conveyer 20. The loaded powder granule is evenly spread on the surface of the conveyer 20 by scraper 19 to be a layer of a constant thickness.
The powder granule that is transferred on the belt conveyer 20 in the layer of a constant thickness is measured for its moisture content by the moisture gauge 21 while passing under the same, and then consecutively is intermittently irradiated by the strobo diffusion hood 22 and is photosenced by the television camera 23 while passing under the same, so that the number and size of the coloured foreign particles within the powder granule are measured.
Thereafter, the conveyed powder granule is dropped into the 3rd hopper 24 to be accumulated therein.
The related data to the existence or not of magnetic foreign material within the powder granule, tha moisture ratio of the powder granule as well as the number and size of coloured foreign particles contained in the powder granule are memorized in the computer (not shown in drawin~s) and the powder granule is then feedback to the on-line to be used.
2~22?J7~
; A practical example of the powder granule inspection as conducted by the apparatus of the present invention is hereunder illustrated.
Under the conditions of;
Power source - AClOOV, 50/60 Hz, 40A
Pneumatic source - 4 Kg/cm2, 200 NQ/min.
With the inspected subject being polyvinyl chloride resin powder ~diameter 80 - 150 microns), (1) Coloured foreign particles Foreign particles of black, brown and yellow as appearance on their surfaces diameter larger then 100 microns (2) Magnetic foreign particle larger then SS dia. 200 microns, SUS dia. 700 microns ~3) Moisture content Min. O - 0.1% Max O - 95% ~ 0.5%
were the degree of precision on the inspection data that was obtained.
As above stated, according to the powder granule sample inspection apparatus of the present invention, it is possible to continuously and automatically conduct the inspection of the existence or not of magnetic foreign particles mixed into the powder granule sampled, the moisture content ratio of the sample, as well as the number and size of coloured~foreign particles within the sample of -the powder granule in a streamed manner.
Further, since such multi categorized inspections can be continuously and automatically conducted, it is possible to eliminate the manpower and also obtain inspection data of high precision. Especially, owing to the sample on the : , ,.
2~2'~.3 surface of the belt conveyer 20 being accurately sprea~ into a constant thickness layer by the scraper l9, the moisture content ratio of the sample, and the number and size of the coloured foreign particles in the sample are measured as inspection data with high precision that are obtained.
Further, since the same lot of samples are as they are inspected in the plural items mentioned above within a relatively short time, which is to say, the short time in which the samples are dropping through connection tube 12 and conveyed on belt conveyer 20, the sample change in quality is prevented so that a high precisioned inspection data for one lot of samples is available.
Also, the present invention is not limited to the inspection of such items as the moisture content ratio of the sample and the number and size of coloured foreign particles within the sample while the sample is above the belt conveyer 20, it may be applied to cases where at least one of the above items be inspected.
Further, the inspection items need not be limited to ;
those explained above, but the present invention also may be applied to the inspections of grain size, melting point or nominal gravity, etc.
The metal detector 13 can detect not only magnetic foreignal material but also metallic foreign material such as non-magnetic material, for instance.
Further, in lieu of the trough 17, a screw conveyer or the like and in lieu of the belt conveyer, a rotary table may be used.
It will be apparent that many modifications and variations could be effected by one skilled in the art ~ without departing from the spirits or the scope of the n2~22 concepts of the present invention so that the spirits or scope of the invention should be determined by the appended claims only.
.; , .
~:
~ :~
:
_g_ ~
Claims (5)
1. A powder granule sample inspection apparatus, comprising:
a) a sampling means for sampling powder granules together with air;
b) separating means for separating sampled powder granules from air;
c) feeding means for feeding said sampled powder granules;
d) transferring means for transferring said sampled powder granules fed;
e) means for making said powder granules transferred as one layer; and f) inspection means for inspecting said sampled powder granules.
a) a sampling means for sampling powder granules together with air;
b) separating means for separating sampled powder granules from air;
c) feeding means for feeding said sampled powder granules;
d) transferring means for transferring said sampled powder granules fed;
e) means for making said powder granules transferred as one layer; and f) inspection means for inspecting said sampled powder granules.
2. A powder granule sample inspection apparatus as claimed in claim 1, wherein said inspection means includes a metal detector for inspecting existence or not of metallic foreign particles in said sampled powder granules.
3. A powder granule sample inspection apparatus as claimed in claim 1, wherein said inspection means includes measuring means for measuring moisture ratio of said sampled powder granules in the form of one layer.
4. A powder granule sample inspection apparatus as claimed in claim 1, wherein said inspection means includes another measuring means for measuring the number and size of colored foreign particles contained in said sampled powder granules in the form of one layer.
5. A powder granule sample inspection apparatus according to claim 1 further comprising means for measuring the volume of said powder granules sampled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2022275 CA2022275A1 (en) | 1990-07-30 | 1990-07-30 | Powder granule sample inspection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2022275 CA2022275A1 (en) | 1990-07-30 | 1990-07-30 | Powder granule sample inspection apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2022275A1 true CA2022275A1 (en) | 1992-01-31 |
Family
ID=4145590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2022275 Abandoned CA2022275A1 (en) | 1990-07-30 | 1990-07-30 | Powder granule sample inspection apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2022275A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001011342A1 (en) * | 1999-08-09 | 2001-02-15 | Colin Roy Jeffress | Automated sample analysis system |
-
1990
- 1990-07-30 CA CA 2022275 patent/CA2022275A1/en not_active Abandoned
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001011342A1 (en) * | 1999-08-09 | 2001-02-15 | Colin Roy Jeffress | Automated sample analysis system |
| AU752019B2 (en) * | 1999-08-09 | 2002-09-05 | Colin Roy Jeffress | Automated sample analysis system |
| US6739209B1 (en) | 1999-08-09 | 2004-05-25 | Colin Roy Jeffress | Automated sample analysis system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |