Patent US3280143A successfully refreshed from Google Patents.
US3280143A
Expired / Lapsed
US
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Imides of polyhalopolhydromethanonaphthalenedicarboxylic acids
Assignee: Universal Oil Products Co
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Filing: 1963-12-12
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Granted: 1966-10-18
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Expires: 1983-12-12
Abstract
No abstract record available.
Inventors
- 👤 Charles M Hayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:00
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4014; C08G59/4042; C07; C07D; C07D209/00; C07D209/56; C07D209/58; C07D209/70; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/671; C08G18/6735
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
AN IMIDE OF THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
7 words
AN IMIDE OF THE FOLLOWING 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) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |