GB1468332A - Particle counting system including a coincidence correction circuit - Google Patents
Particle counting system including a coincidence correction circuitInfo
- Publication number
- GB1468332A GB1468332A GB608675A GB608675A GB1468332A GB 1468332 A GB1468332 A GB 1468332A GB 608675 A GB608675 A GB 608675A GB 608675 A GB608675 A GB 608675A GB 1468332 A GB1468332 A GB 1468332A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulse
- gate
- output
- particle
- count
- 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.)
- Expired
Links
- 239000002245 particle Substances 0.000 title abstract 7
- 210000004027 cell Anatomy 0.000 abstract 4
- 230000001960 triggered effect Effects 0.000 abstract 2
- 210000003743 erythrocyte Anatomy 0.000 abstract 1
- 210000000265 leukocyte Anatomy 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K21/00—Details of pulse counters or frequency dividers
- H03K21/02—Input circuits
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/10—Investigating individual particles
- G01N15/1031—Investigating individual particles by measuring electrical or magnetic effects
- G01N15/12—Investigating individual particles by measuring electrical or magnetic effects by observing changes in resistance or impedance across apertures when traversed by individual particles, e.g. by using the Coulter principle
- G01N15/131—Details
- G01N15/132—Circuits
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Measurement Of Radiation (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US447530A US3864551A (en) | 1974-03-01 | 1974-03-01 | Coincidence correction circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1468332A true GB1468332A (en) | 1977-03-23 |
Family
ID=23776728
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB608675A Expired GB1468332A (en) | 1974-03-01 | 1975-02-13 | Particle counting system including a coincidence correction circuit |
Country Status (10)
Country | Link |
---|---|
US (1) | US3864551A (xx) |
JP (1) | JPS5639417B2 (xx) |
BE (1) | BE826007A (xx) |
CA (1) | CA1013434A (xx) |
DE (1) | DE2505837C3 (xx) |
ES (1) | ES435131A1 (xx) |
FR (1) | FR2262835B1 (xx) |
GB (1) | GB1468332A (xx) |
NL (1) | NL168333C (xx) |
ZA (1) | ZA75616B (xx) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE377612B (xx) * | 1973-11-09 | 1975-07-14 | T L B Greverus | |
US3938038A (en) * | 1974-07-01 | 1976-02-10 | Coulter Electronics, Inc. | Method and apparatus for providing primary coincidence correction during particle analysis |
US3944791A (en) * | 1974-07-10 | 1976-03-16 | General Science Corporation | Platelet count correction circuit |
US4042808A (en) * | 1975-08-11 | 1977-08-16 | Angel Engineering Corporation | Particle count correction |
DE2547885C3 (de) * | 1975-10-25 | 1980-05-08 | Dr. Johannes Heidenhain Gmbh, 8225 Traunreut | Elektronischer Zähler |
JPS5598333A (en) * | 1979-01-22 | 1980-07-26 | Toa Medical Electronics Co Ltd | Particle counting device |
US4366372A (en) * | 1979-06-01 | 1982-12-28 | Innovative Design, Inc. | Apparatus and method for counting repetitive marks on a running web |
US4447883A (en) * | 1981-05-26 | 1984-05-08 | Technicon Instruments Corporation | Coincidence-error correcting apparatus and method |
JPS59125931U (ja) * | 1983-02-10 | 1984-08-24 | 近藤 祐二 | 洋服の肩パツド |
JPS60314U (ja) * | 1983-06-15 | 1985-01-05 | 岩崎産業株式会社 | 成形肩パツト |
JPS61113806A (ja) * | 1984-11-07 | 1986-05-31 | 丸善工業株式会社 | 肩当パツトの製造方法 |
JPS62170507A (ja) * | 1986-01-22 | 1987-07-27 | 北岸 茂 | 肩当パツトの製造方法 |
JPS63115027U (xx) * | 1987-01-14 | 1988-07-25 | ||
DE102006021487B3 (de) * | 2006-05-05 | 2007-09-06 | Parsum Gmbh | Verfahren und Vorrichtung zur Bestimmung der in einem Partikelstrom enthaltenen Partikel |
FR2917842A1 (fr) * | 2007-06-19 | 2008-12-26 | Commissariat Energie Atomique | Dispositif et methode de comptage de particules elementaires emises par un fluide dans un conduit. |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3209130A (en) * | 1962-04-30 | 1965-09-28 | Westinghouse Electric Corp | Digital measuring device |
US3686665A (en) * | 1969-12-31 | 1972-08-22 | Leeds & Northrup Co | Digital function generator |
-
1974
- 1974-03-01 US US447530A patent/US3864551A/en not_active Expired - Lifetime
-
1975
- 1975-01-29 ZA ZA00750616A patent/ZA75616B/xx unknown
- 1975-02-12 DE DE2505837A patent/DE2505837C3/de not_active Expired
- 1975-02-13 GB GB608675A patent/GB1468332A/en not_active Expired
- 1975-02-13 CA CA220,075A patent/CA1013434A/en not_active Expired
- 1975-02-13 JP JP1754875A patent/JPS5639417B2/ja not_active Expired
- 1975-02-26 BE BE153764A patent/BE826007A/xx not_active IP Right Cessation
- 1975-02-27 ES ES435131A patent/ES435131A1/es not_active Expired
- 1975-02-28 FR FR7506453A patent/FR2262835B1/fr not_active Expired
- 1975-02-28 NL NLAANVRAGE7502387,A patent/NL168333C/xx active
Also Published As
Publication number | Publication date |
---|---|
ES435131A1 (es) | 1977-02-01 |
NL7502387A (nl) | 1975-09-03 |
NL168333B (nl) | 1981-10-16 |
DE2505837C3 (de) | 1979-07-26 |
CA1013434A (en) | 1977-07-05 |
JPS50120880A (xx) | 1975-09-22 |
NL168333C (nl) | 1982-03-16 |
FR2262835B1 (xx) | 1979-06-08 |
BE826007A (fr) | 1975-06-16 |
JPS5639417B2 (xx) | 1981-09-12 |
US3864551A (en) | 1975-02-04 |
DE2505837B2 (de) | 1978-11-16 |
FR2262835A1 (xx) | 1975-09-26 |
DE2505837A1 (de) | 1975-09-25 |
ZA75616B (en) | 1976-01-28 |
AU7808275A (en) | 1976-08-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |