Patent US2355182A successfully refreshed from Google Patents.
Patent US524193A successfully refreshed from Google Patents.
Patent US3271368A successfully refreshed from Google Patents.
US3271368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfonate-thiocarbonate copolymers
Assignee: GE Chemicals Inc
•
Filing: 1963-05-02
•
Granted: 1966-09-06
•
Expires: 1983-05-02
Abstract
No abstract record available.
Inventors
- 👤 Eugene P Goldberg
- 👤 Scardiglia Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:31
CPC Classifications
C; C08; C08G; C08G75/00; C08G75/24; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49105
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
A LINEAR COPOLYMER COMPOSITION COMPRISING IN ITS LINEAR CHAIN FROM ABOUT 25 MOLE PERCENT TO ABOUT 75 MOLE PERCENT (1) SULFONATE ESTER STRUCTURAL UNITS OF THE FORMULA
Claim 2
Dependent Claim
27 words
A LINEAR COPOLYMER COMPOSITION COMPRISING IN ITS LINEAR CHAIN FROM ABOUT 25 MOLE PERCENT TO ABOUT 75 MOLE PERCENT (1) SULFONATE ESTER STRUCTURAL UNITS 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) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |