US3492330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Norbornane diisocyanates
Assignee: Union Carbide Corp
•
Filing: 1965-12-09
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Granted: 1970-01-27
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Expires: 1985-12-09
Abstract
No abstract record available.
Inventors
- 👤 David J Trecker
- 👤 Joseph P Henry
- 👤 John W Lynn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:07
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26; C07; C07C; C07C31/00; C07C31/27; C07C31/278; C08G12/00; C08G12/02; C08G12/04; C08G12/22; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/32; C08G18/3225; C08G18/3234; C08G18/70; C08G18/72; C08G18/74; C08G18/75; C08G18/758; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/24; C08G59/40; C08G59/42; C08G59/4215; C08G59/50; C08G59/5026; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/199
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2411516A
Cited
US2957906A
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US2917490A
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US3000864A
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US2956977A
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US3141900A
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US3236900A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-26 | 1973-07-28 | 1974-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-26 | 1977-07-28 | 1978-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-26 | 1981-07-28 | 1982-01-27 | $7700.00 | Window Closed / Lapsed |