US3702256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Marine antifouling additive
Assignee: L M STEVENS CORP
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Filing: 1971-04-26
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Granted: 1972-11-07
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Expires: 1991-04-26
Abstract
Abstract A MARINE ANTI-FOULING ADDITIVE TO ENHANCE AN EXISTENT ANTI-FOULING PAINT FORMULATION OR TO MAKE AN EXISTENT PAINT FORMULATION ANTI-FOULING CONSISTING OF SAID PAINT FORMULATION AND 30% TO 60% BY WEIGHT OF COPPER NAPHTHENATE AND 0.5% TO 5.0% BY WEIGHT OF FORMALDEHYDE.
Inventors
- 👤 Louis M Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:37
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/16; C09D5/1606; C09D5/1612; C09D5/1625
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-07 | 1976-05-08 | 1976-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-07 | 1980-05-08 | 1980-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-07 | 1984-05-08 | 1984-11-07 | $7700.00 | Window Closed / Lapsed |