NL77721C - - Google Patents
Info
- Publication number
- NL77721C NL77721C NL77721DA NL77721C NL 77721 C NL77721 C NL 77721C NL 77721D A NL77721D A NL 77721DA NL 77721 C NL77721 C NL 77721C
- Authority
- NL
- Netherlands
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/16—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using titration
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Molecular Biology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR909157X | 1949-02-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL77721C true NL77721C (en:Method) |
Family
ID=9407715
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL676704306A NL151565B (nl) | 1949-02-10 | Veldeffecttransistor, met ten minste twee geisoleerde stuurelektroden. | |
| NL77721D NL77721C (en:Method) | 1949-02-10 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL676704306A NL151565B (nl) | 1949-02-10 | Veldeffecttransistor, met ten minste twee geisoleerde stuurelektroden. |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE493806A (en:Method) |
| CH (1) | CH291248A (en:Method) |
| DE (1) | DE909157C (en:Method) |
| FR (1) | FR1011453A (en:Method) |
| GB (1) | GB668237A (en:Method) |
| NL (2) | NL77721C (en:Method) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2143638A (en) * | 1983-07-01 | 1985-02-13 | Devon County Council | Fluid flow tracing and monitoring of sewage-treatment-plant operation |
| US4628204A (en) * | 1984-08-16 | 1986-12-09 | S.A. Texaco Belgium N.V. | Optical method to study the stability of colloidal systems |
-
0
- NL NL676704306A patent/NL151565B/xx unknown
- NL NL77721D patent/NL77721C/xx active
- BE BE493806D patent/BE493806A/xx unknown
-
1949
- 1949-02-10 FR FR1011453D patent/FR1011453A/fr not_active Expired
-
1950
- 1950-02-08 GB GB3279/50A patent/GB668237A/en not_active Expired
- 1950-02-09 CH CH291248D patent/CH291248A/fr unknown
- 1950-02-10 DE DES1626A patent/DE909157C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB668237A (en) | 1952-03-12 |
| NL151565B (nl) | |
| BE493806A (en:Method) | |
| CH291248A (fr) | 1953-06-15 |
| FR1011453A (fr) | 1952-06-23 |
| DE909157C (de) | 1954-04-15 |