US3497469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire retardant intumescent clear polyurethane coatings
Assignee: Hooker Chemical Corp
•
Filing: 1965-08-09
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Granted: 1970-02-24
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Expires: 1985-08-09
Abstract
No abstract record available.
Inventors
- 👤 Noel D Blair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:50
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)
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) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |