Patent US3391092A successfully refreshed from Google Patents.
US3391092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire-resistant polyurethanes prepared from adducts of hexahalocyclopentadiene dicarboxylic acids and a monomeric 1, 2-epoxide
Assignee: Hooker Chemical Corp
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Filing: 1965-10-22
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Granted: 1968-07-02
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Expires: 1985-10-22
Abstract
No abstract record available.
Inventors
- 👤 Worsley Michael
- 👤 Raymond R Hindersinn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:28
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/6795; C08G18/68; C08G18/683; C08G18/686
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
11 words
A FIRE-RESISTANT POLYURETHANE FOAM PRODUCT OF THE REACTION OF COMPONENTS COMPRISING
References Cited (Backward Citations)
US3055850A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-02 | 1972-01-01 | 1972-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-02 | 1976-01-01 | 1976-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-02 | 1980-01-01 | 1980-07-02 | $7700.00 | Window Closed / Lapsed |