US2608570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of organic peresters
Assignee: Shell Development Co
•
Filing: 1948-10-19
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Granted: 1952-08-26
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Expires: 1968-10-19
Abstract
No abstract record available.
Inventors
- 👤 Harman Denham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:43
CPC Classifications
C; C07; C07C; C07C409/00; C07C409/38; C07C407/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
A PROCESS FOR THE PRODUCTION OF TERTIARYBUTYL PERACETATE WHICH COMPRISES PASSING KETENE INTO TERTIARY-BUTYL HYDROPEROXIDE CONTAINING A TRACE OF SULFURIC ACID AT A TEMPERATURE OF FROM ABOUT 0* C. TO ABOUT 50* C.
Claim 2
Dependent Claim
33 words
A PROCESS FOR THE PRODUCTION OF TERTIARYBUTYL PERACETATE WHICH COMPRISES PASSING KETENE INTO TERTIARY-BUTYL HYDROPEROXIDE CONTAINING A TRACE OF SULFURIC ACID AT A TEMPERATURE OF FROM ABOUT 0* C. TO ABOUT 50* C.
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) | 1955-08-26 | 1956-02-25 | 1956-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-26 | 1960-02-25 | 1960-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-26 | 1964-02-25 | 1964-08-26 | $7700.00 | Window Closed / Lapsed |