US2917499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trialkylidenecyclobutanes and polymers thereof
Assignee: EIDP Inc
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Filing: 1956-11-29
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Granted: 1959-12-15
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Expires: 1976-11-29
Abstract
No abstract record available.
Inventors
- 👤 Cripps Harry Norman
- 👤 Williams John Kendall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:13
CPC Classifications
C; C07; C07C; C07C13/00; C07C13/28; C07C13/32; C07C13/54; C07C1/00; C07C1/32; C07C1/321; C07C1/323; C07C13/02; C07C13/06; C07C13/47; C07C13/52; C08; C08F; C08F10/00; C07C2601/00; C07C2601/04; C07C2602/00; C07C2602/02; C07C2602/14; C07C2602/26; C07C2602/30; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/36
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
13 words
A PROCESS COMPRISING PYROLYZING A 3-ALKYLIDENECYCLOBUTANE-1,2-BIS (METHYLQUATERNARY AMMONIUM HYDROXIDE) TO FORM CYCLIC HYDROCARBONS.
Claim 2
Dependent Claim
13 words
A PROCESS COMPRISING PYROLYZING A 3-ALKYLIDENECYCLOBUTANE-1,2-BIS (METHYLQUATERNARY AMMONIUM HYDROXIDE) TO FORM CYCLIC HYDROCARBONS.
Claim 3
Dependent Claim
83 words
A HYDROCARBON HAVING THREE ETHYLENIC DOUBLE BONDS IN CONJUGATED RELATIONSHIP, EACH PAIR OF DOUBLE BONDS BEING ATTACHED TO A CARBON ATOM OF A FOUR-MEMBERED RING, ONE ANNULAR CARON ATOM OF SAID RING BEARING A METHYLENE SUBSTITUENT, AN ADJACENT ANNULAR CARON BEARING AN ALKYLIDENE SUBSTITUENT HAVING AT LEAST ONE HYDROGEN ATOM ON THE CARBON THAT IS ATTACHED TO SAID RING, AND THE OTHER ADJACENT ANNULAR CARBON ATOM BEARING A SINGLE CARBON HYDROCARBON SUBSTITUENT AND A DOUBLE BOND, THE REMAINING ANNULAR CARBON ATOM BEING UNSUBSTITUTED.
Claim 4
Dependent Claim
83 words
A HYDROCARBON HAVING THREE ETHYLENIC DOUBLE BONDS IN CONJUGATED RELATIONSHIP, EACH PAIR OF DOUBLE BONDS BEING ATTACHED TO A CARBON ATOM OF A FOUR-MEMBERED RING, ONE ANNULAR CARON ATOM OF SAID RING BEARING A METHYLENE SUBSTITUENT, AN ADJACENT ANNULAR CARON BEARING AN ALKYLIDENE SUBSTITUENT HAVING AT LEAST ONE HYDROGEN ATOM ON THE CARBON THAT IS ATTACHED TO SAID RING, AND THE OTHER ADJACENT ANNULAR CARBON ATOM BEARING A SINGLE CARBON HYDROCARBON SUBSTITUENT AND A DOUBLE BOND, THE REMAINING ANNULAR CARBON ATOM BEING UNSUBSTITUTED.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |