US2806873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric adipate of dimethyl-hexynediol
Assignee: Airco Inc
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Filing: 1954-10-29
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Granted: 1957-09-17
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Expires: 1974-10-29
Abstract
No abstract record available.
Inventors
- 👤 Daniel C Rowlands
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:23
CPC Classifications
C; C10; C10M; C10M3/00; C10M2209/00; C10M2209/10; C10M2209/102
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A COMPOSISTION OF MATTER COMPRISING A MIXTURE OF LOW MOLECULAR WEIGHT POLYESTERS OBTAINED BY REACTING ADIPYL CHLORIDE WITH 2,5-DIMETHYL-3-HEXYNE-2,5-DIOL IN THE PRESENCE OF AN ACID ACCEPTOR, THE MOLE RATIO OF SAID ADIPYL CHLORIDE TO SAID 2,5-DIMETHYL-3-HEXYNE-2,5-DIOL BEING ABOUT 1 TO 1, AND CONDUCTING THE REACTION IN BENZENE AND AT A TEMPERATURE OF ABOUT 60*C.
Claim 2
Dependent Claim
54 words
A COMPOSISTION OF MATTER COMPRISING A MIXTURE OF LOW MOLECULAR WEIGHT POLYESTERS OBTAINED BY REACTING ADIPYL CHLORIDE WITH 2,5-DIMETHYL-3-HEXYNE-2,5-DIOL IN THE PRESENCE OF AN ACID ACCEPTOR, THE MOLE RATIO OF SAID ADIPYL CHLORIDE TO SAID 2,5-DIMETHYL-3-HEXYNE-2,5-DIOL BEING ABOUT 1 TO 1, AND CONDUCTING THE REACTION IN BENZENE AND AT A TEMPERATURE OF ABOUT 60*C.
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) | 1960-09-16 | 1961-03-18 | 1961-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-16 | 1965-03-18 | 1965-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-16 | 1969-03-18 | 1969-09-17 | $7700.00 | Window Closed / Lapsed |