US3130200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of the tetraesters of pentaerythritol
Assignee: Boyer and Cie
•
Filing: 1961-01-11
•
Granted: 1964-04-21
•
Expires: 1981-01-11
Abstract
No abstract record available.
Inventors
- 👤 Barbry Etienne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:39
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/02; C07C69/22; C07C69/33; C07C67/00; C07C67/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
A METHOD OF PREPARATION OF TETRAESTERS OF PENTAERYTHRITOL OF THE FORMULA:
Claim 2
Independent Claim
11 words
A METHOD OF PREPARATION OF TETRAESTERS OF PENTAERYTHRITOL OF THE FORMULA:
References Cited (Backward Citations)
US1922459A
Cited
US1583658A
Cited
US1946202A
Cited
US2031603A
Cited
US2381247A
Cited
GB594814A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |