US3527726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-soluble ammonium or amine salts of phosphate esters of styrene-maleic anhydride copolymer - polyalkylene glycol esters
Assignee: Atlantic Richfield Co
•
Filing: 1968-07-17
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Granted: 1970-09-08
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Expires: 1988-07-17
Abstract
No abstract record available.
Inventors
- 👤 Howard D Gower
- 👤 Bob G Gower
- 👤 David W Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:17
CPC Classifications
C; C10; C10M; C10M173/00; C10M173/02; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/091; C08; C08F; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/08; C08F222/00; C08F222/04; C08F222/06; C08F222/08; C08F2800/00; C08F2800/10; C10M2201/00; C10M2201/02; C10M2225/00; C10M2225/02; C10N; C10N2040/00; C10N2040/20; C10N2040/22; C10N2050/00; C10N2050/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3085986A
Cited
US3245933A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-07 | 1974-03-09 | 1974-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-07 | 1978-03-09 | 1978-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-07 | 1982-03-09 | 1982-09-08 | $7700.00 | Window Closed / Lapsed |