US3334128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparation of bis(chloroformates) from diols
Assignee: EIDP Inc
•
Filing: 1964-08-21
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Granted: 1967-08-01
•
Expires: 1984-08-21
Abstract
No abstract record available.
Inventors
- 👤 Brown Morton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:46
CPC Classifications
C; C07; C07D; C07D317/00; C07D317/08; C07D317/10; C07D317/32; C07D317/34; C07D317/36; C07C; C07C68/00; C07C68/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
IN THE PROCESS FOR THE PREPARTION OF A BIS(CHLOROFORMATE) OF A DIOL BY REACTING A STOICHIOMETRIC EXCESS OF PHOSGENE IN AN ETHER SOLVENT WITH A DIOL HAVING THE FORMULA
Claim 2
Dependent Claim
29 words
IN THE PROCESS FOR THE PREPARTION OF A BIS(CHLOROFORMATE) OF A DIOL BY REACTING A STOICHIOMETRIC EXCESS OF PHOSGENE IN AN ETHER SOLVENT WITH A DIOL HAVING THE FORMULA
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) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |