US3262914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfonate-carboxylate copolymers
Assignee: GE Chemicals Inc
•
Filing: 1965-03-16
•
Granted: 1966-07-26
•
Expires: 1985-03-16
Abstract
No abstract record available.
Inventors
- 👤 Eugene P Goldberg
- 👤 Scardiglia Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:55
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/688; C08G63/6884; C08G63/6886; C08G75/00; C08G75/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A LINEAR COPOLYMER COMPOSITION HAVING AN INTRINSIC VISCOSITY IN EXCESS OF 0.3 DL./G. WHEN MEASURED IN TETRACHLOROETHANE AT 25*C. COMPRISING FROM ABOUT 5 TO ABOUT 40 MOLE PERCENT BISPHENOL SULFONATE ESTER STRUCTURAL UNITS OF THE FORMULA
Claim 2
Dependent Claim
36 words
A LINEAR COPOLYMER COMPOSITION HAVING AN INTRINSIC VISCOSITY IN EXCESS OF 0.3 DL./G. WHEN MEASURED IN TETRACHLOROETHANE AT 25*C. COMPRISING FROM ABOUT 5 TO ABOUT 40 MOLE PERCENT BISPHENOL SULFONATE ESTER STRUCTURAL UNITS OF THE FORMULA
References Cited (Backward Citations)
BE585882A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |