US3449161A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire retardant intumescent coating compositions
Assignee: Hooker Chemical Corp
•
Filing: 1965-08-09
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Granted: 1969-06-10
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Expires: 1985-08-09
Abstract
No abstract record available.
Inventors
- 👤 Raymond R Hindersinn
- 👤 Gilbert Witschard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:05
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/18; C09D5/185; C08; C08K; C08K5/00; C08K5/49; C08K5/5399; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/26; Y10T428/269; Y10T428/31504; Y10T428/31511; Y10T428/31551; Y10T428/31786; Y10T428/31844
Claims Analysis
Total Claims: 0
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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) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |