US3454505A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethanes from hexahydrotoluene diisocyanates
Assignee: Bayer Corp
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Filing: 1966-06-27
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Granted: 1969-07-08
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Expires: 1986-06-27
Abstract
No abstract record available.
Inventors
- 👤 James Martin Cross
- 👤 Sidney H Metzger Jr
- 👤 Clyde D Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:22
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/74; C08G18/75; C08G18/751; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4003; C07F9/4006; C08G18/28; C08G18/30; C08G18/38; C08G18/3878; C08G18/3889; C08G2101/00; C08G2110/00; C08G2110/0025; C08G2350/00; C08G2380/00
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) | 1972-07-07 | 1973-01-06 | 1973-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-07 | 1977-01-06 | 1977-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-07 | 1981-01-06 | 1981-07-08 | $7700.00 | Window Closed / Lapsed |