US2873291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing bis(chloroformates) of 1, 2-diols
Assignee: EIDP Inc
•
Filing: 1957-07-05
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Granted: 1959-02-10
•
Expires: 1977-07-05
Abstract
No abstract record available.
Inventors
- 👤 Spiegler Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:15
CPC Classifications
C; C07; C07C; C07C68/00; C07C68/02; Y; Y10; Y10S; Y10S502/00; Y10S502/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
IN THE PROCESS OF PREPARING BIS(CHLOROFORMATES) OF 1,2-DIOLS BY SEPARATELY ADDING A FLUID 1,2-DIOL OF THE STRUCTURE
Claim 2
Dependent Claim
17 words
IN THE PROCESS OF PREPARING BIS(CHLOROFORMATES) OF 1,2-DIOLS BY SEPARATELY ADDING A FLUID 1,2-DIOL OF THE STRUCTURE
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) | 1962-02-09 | 1962-08-11 | 1963-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-09 | 1966-08-11 | 1967-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-09 | 1970-08-11 | 1971-02-10 | $7700.00 | Window Closed / Lapsed |