US3485762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laundry detergents containing ammonium salt of styrenemaleic anhydride copolymer and non-ionic,hydroxyl-containing surfactant
Assignee: Sinclair Research Inc
•
Filing: 1966-05-24
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Granted: 1969-12-23
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Expires: 1986-05-24
Abstract
No abstract record available.
Inventors
- 👤 Bob G Gower
- 👤 Henry V Isaacson
- 👤 David W Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:07
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/37; C11D3/3746; C11D3/3757; C11D3/3761
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2621169A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |