US3277060A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of elastomeric polymers by employing during the preparation of the polymer an aliphatic sulfur-containing compound
Assignee: Eastman Kodak Co
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Filing: 1962-04-09
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Granted: 1966-10-04
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Expires: 1982-04-09
Abstract
No abstract record available.
Inventors
- 👤 Bell Alan
- 👤 Charles J Kibler
- 👤 James G Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:17
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/78; C08G63/80; C08G63/66; C08G63/668; C08G63/672; C08G63/68; C08G63/688; C08G63/6884; C08G63/6886; C08G63/785; C08K; C08K5/00; C08K5/36; C08K5/37; C08K5/372
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A PROCESS FOR THE PREPARATION OF A HIGHLY ELASTIC HIGHLY POLYMERIC POLYESTER HAVING AN INHERENT VISCOSITY OF 1.4 TO 3.5 AS MEASURED IN A SOLVENT COMPOSED OF 60% BY WEIGHT OF PHENOL ANG 40% BY WEIGHT OF TETRACHLOROETHANE WHICH COMPRISES REACTING (A) AT LEAST ONE COMPOUND SELECTED FROM THE CLASS CONSISTING OF THE DIBASIC CARBOXYLIC ACID AND THEIR ESTER AND (B) AT LEAST ONE MEMGER OF THE GROUP CONSISTING OF THE CIS- AND TRANS- ISOMERS OF 1,4-CYCLOHEXANEDIMETHANOL AND (C) THE ETHER-GLYCOL HAVING THE STRUCTURAL FORMULA:
Claim 2
Dependent Claim
85 words
A PROCESS FOR THE PREPARATION OF A HIGHLY ELASTIC HIGHLY POLYMERIC POLYESTER HAVING AN INHERENT VISCOSITY OF 1.4 TO 3.5 AS MEASURED IN A SOLVENT COMPOSED OF 60% BY WEIGHT OF PHENOL ANG 40% BY WEIGHT OF TETRACHLOROETHANE WHICH COMPRISES REACTING (A) AT LEAST ONE COMPOUND SELECTED FROM THE CLASS CONSISTING OF THE DIBASIC CARBOXYLIC ACID AND THEIR ESTER AND (B) AT LEAST ONE MEMGER OF THE GROUP CONSISTING OF THE CIS- AND TRANS- ISOMERS OF 1,4-CYCLOHEXANEDIMETHANOL AND (C) THE ETHER-GLYCOL HAVING THE STRUCTURAL FORMULA:
References Cited (Backward Citations)
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US2664378A
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US2729618A
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US2901466A
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US3061612A
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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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |