US3340236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical composition
Assignee: BASF Schweiz AG
•
Filing: 1962-06-04
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Granted: 1967-09-05
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Expires: 1982-06-04
Abstract
No abstract record available.
Inventors
- 👤 Sylvan O Greenlee
- 👤 Guy J Crocker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:06
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/688; C08G63/6884; C07; C07C; C07C323/00; C07D; C07D307/00; C07D307/02; C07D307/34; C07D307/56; C07D307/60; C07D307/77; C07D307/87; C07D307/89; C08F; C08F8/00; C08F8/34; C08G59/00; C08G59/18; C08G59/40; C08G59/42; C08G59/423; C08G59/66
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
A THIOXY POLYACID ANHYDRIDE HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
8 words
A THIOXY POLYACID ANHYDRIDE HAVING THE GENERAL 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) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |