US3092641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diels-alder adducts of perchlorocoumalin
Assignee: Hooker Chemical Corp
•
Filing: 1958-04-30
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Granted: 1963-06-04
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Expires: 1978-04-30
Abstract
No abstract record available.
Inventors
- 👤 Leon Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:42
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/682; C08G63/6824; C08G63/6828; C07; C07C; C07C17/00; C07C17/26; C07C17/263; C07C61/00; C07C61/16; C07C61/40; C08G59/00; C08G59/18; C08G59/40; C08G59/42; C08G59/4215
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE DIELS-ALDER MONO-AND DI-ADDUCTS OF PERCHLOROCCOUMALIN AND, AS THE DIENOPHILE, AN OLEFINIC COMPOUND SELECTED FROM GROUP CONSISTING OF LOWER ALKADIENES, LOER CYCL~ALKADIENES HAVING NO MORE THAN TWO FUSED RINGS, METHYLCARY ATE, DIMETHYL FUMARATE, MALEIC ACID, FUMARIC ACID, ETHYLMALEIC ACID, ITACONIC ACID, MESACONIC ACID, CITRACONIC ACID, AND LINOLEIC ACID AND THE CORRESPONDING ANHYDRIDES OF THE ACIDS, AND MIXTURES THEREOF.
Claim 2
Dependent Claim
66 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE DIELS-ALDER MONO-AND DI-ADDUCTS OF PERCHLOROCCOUMALIN AND, AS THE DIENOPHILE, AN OLEFINIC COMPOUND SELECTED FROM GROUP CONSISTING OF LOWER ALKADIENES, LOER CYCL~ALKADIENES HAVING NO MORE THAN TWO FUSED RINGS, METHYLCARY ATE, DIMETHYL FUMARATE, MALEIC ACID, FUMARIC ACID, ETHYLMALEIC ACID, ITACONIC ACID, MESACONIC ACID, CITRACONIC ACID, AND LINOLEIC ACID AND THE CORRESPONDING ANHYDRIDES OF THE ACIDS, AND MIXTURES THEREOF.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |