FR2133781B1 - - Google Patents
Info
- Publication number
- FR2133781B1 FR2133781B1 FR7213289A FR7213289A FR2133781B1 FR 2133781 B1 FR2133781 B1 FR 2133781B1 FR 7213289 A FR7213289 A FR 7213289A FR 7213289 A FR7213289 A FR 7213289A FR 2133781 B1 FR2133781 B1 FR 2133781B1
- Authority
- FR
- France
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/005—Amalgam decomposition cells
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D1/00—Oxides or hydroxides of sodium, potassium or alkali metals in general
- C01D1/04—Hydroxides
- C01D1/28—Purification; Separation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Metallurgy (AREA)
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13597171A | 1971-04-21 | 1971-04-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2133781A1 FR2133781A1 (OSRAM) | 1972-12-01 |
| FR2133781B1 true FR2133781B1 (OSRAM) | 1977-06-24 |
Family
ID=22470632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7213289A Expired FR2133781B1 (OSRAM) | 1971-04-21 | 1972-04-14 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3764495A (OSRAM) |
| BE (1) | BE782470A (OSRAM) |
| CA (1) | CA993174A (OSRAM) |
| DE (1) | DE2218968A1 (OSRAM) |
| FR (1) | FR2133781B1 (OSRAM) |
| GB (1) | GB1378453A (OSRAM) |
| IT (1) | IT960356B (OSRAM) |
| NL (1) | NL7205377A (OSRAM) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL178962C (nl) * | 1973-08-09 | 1986-06-16 | Montedison Spa | Werkwijze voor de verwijdering van kwik en kwikzouten uit een vloeibare afvalstroom. |
| US4260494A (en) * | 1978-12-04 | 1981-04-07 | Olin Corporation | Method of purifying aqueous solutions of metal hydroxides |
| US4333913A (en) * | 1978-12-04 | 1982-06-08 | Olin Corporation | Method of purifying aqueous solutions of metal hydroxides |
| JP3506172B2 (ja) * | 1997-03-13 | 2004-03-15 | 信越半導体株式会社 | 半導体ウェーハのエッチング方法 |
-
1971
- 1971-04-21 US US00135971A patent/US3764495A/en not_active Expired - Lifetime
-
1972
- 1972-03-15 CA CA137,138A patent/CA993174A/en not_active Expired
- 1972-04-14 FR FR7213289A patent/FR2133781B1/fr not_active Expired
- 1972-04-19 DE DE19722218968 patent/DE2218968A1/de active Pending
- 1972-04-20 NL NL7205377A patent/NL7205377A/xx unknown
- 1972-04-20 GB GB1834772A patent/GB1378453A/en not_active Expired
- 1972-04-21 BE BE782470A patent/BE782470A/xx unknown
- 1972-04-22 IT IT86241/72A patent/IT960356B/it active
Also Published As
| Publication number | Publication date |
|---|---|
| NL7205377A (OSRAM) | 1972-10-24 |
| CA993174A (en) | 1976-07-20 |
| GB1378453A (en) | 1974-12-27 |
| IT960356B (it) | 1973-11-20 |
| US3764495A (en) | 1973-10-09 |
| BE782470A (fr) | 1972-10-23 |
| DE2218968A1 (de) | 1972-10-26 |
| FR2133781A1 (OSRAM) | 1972-12-01 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |