US3277055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfonate-carboxylate-thiocarbonate copolymers
Assignee: GE Chemicals Inc
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Filing: 1962-04-03
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Granted: 1966-10-04
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Expires: 1982-04-03
Abstract
No abstract record available.
Inventors
- 👤 Eugene P Goldberg
- 👤 Scardiglia Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:01
CPC Classifications
C; C08; C08G; C08G75/00; C08G75/28; C08G75/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A LINEAR COPOLYMER COMPOSITION HAVING A HEAT DISTORTION TEMPERATURE IN XCESS OF 145*C. AND IMPROVED HYDROLYTIC STABILITY AS INDICATED BY LESS THAN 3 PERCENT WEIGHT LOSS OF A 1/2" X 1/4" X 1/8" SAMPLE TREATED IN REFLUXING SODIUM HYDROXIDE FOR TWENTY HOURS AND AN INTRINISIC VISCOSITY IN EXCESS OF 0.3 DL./G. COMPRISING ITS LINEAR CHAIN UP TO ABOUT 50 MOLE PERCENT RECURRING (A) STRUCTURAL UNIT CONTAINING SULFONATE AND CARBOXYLATE ESTER GROUPS OF THE FORMULA
Claim 2
Dependent Claim
74 words
A LINEAR COPOLYMER COMPOSITION HAVING A HEAT DISTORTION TEMPERATURE IN XCESS OF 145*C. AND IMPROVED HYDROLYTIC STABILITY AS INDICATED BY LESS THAN 3 PERCENT WEIGHT LOSS OF A 1/2" X 1/4" X 1/8" SAMPLE TREATED IN REFLUXING SODIUM HYDROXIDE FOR TWENTY HOURS AND AN INTRINISIC VISCOSITY IN EXCESS OF 0.3 DL./G. COMPRISING ITS LINEAR CHAIN UP TO ABOUT 50 MOLE PERCENT RECURRING (A) STRUCTURAL UNIT CONTAINING SULFONATE AND CARBOXYLATE ESTER GROUPS OF THE 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) | 1969-10-03 | 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 |