US2832670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the decomposition of phosgene
Assignee: Bayer AG
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Filing: 1954-01-13
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Granted: 1958-04-29
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Expires: 1974-01-13
Abstract
No abstract record available.
Inventors
- 👤 Wolithan Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:03
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/68; B01D53/02; B01D53/025; C; C01; C01B; C01B32/00; C01B32/50; C01B32/55; C01B32/70; C01B32/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
PROCESS FOR THE DECOMPOSITION OF PHOSGENE WHICH COMPRISES CONTACTING PHOSGENE WITH LIQUID WATER IN THE PRESENCE OF A SUFFICIENT AMOUNT OF ACTIVATED CARBON TO CAUSE THE LIQUID WATER TO HYDROLYZE THE PHOSGENE TO HYDROCHLORIC ACID AND CARBONIC ACID, SAID WATER BEING PRESENT IN AMOUNT SUFFICIENT TO MAINTAIN A CONCENTRATION OF THE HYDROCHLORIC ACID FORMED BY THE HYDROLYSIS BELOW ABOUT 10%.
Claim 2
Dependent Claim
60 words
PROCESS FOR THE DECOMPOSITION OF PHOSGENE WHICH COMPRISES CONTACTING PHOSGENE WITH LIQUID WATER IN THE PRESENCE OF A SUFFICIENT AMOUNT OF ACTIVATED CARBON TO CAUSE THE LIQUID WATER TO HYDROLYZE THE PHOSGENE TO HYDROCHLORIC ACID AND CARBONIC ACID, SAID WATER BEING PRESENT IN AMOUNT SUFFICIENT TO MAINTAIN A CONCENTRATION OF THE HYDROCHLORIC ACID FORMED BY THE HYDROLYSIS BELOW ABOUT 10%.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-28 | 1961-10-28 | 1962-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-28 | 1965-10-28 | 1966-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-28 | 1969-10-28 | 1970-04-29 | $7700.00 | Window Closed / Lapsed |