US3551475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyisocyanates and reaction products of the same
Assignee: Union Carbide Corp
•
Filing: 1965-09-07
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Granted: 1970-12-29
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Expires: 1985-09-07
Abstract
No abstract record available.
Inventors
- 👤 Thomas K Brotherton
- 👤 John W Lynn
- 👤 Robert J Knopf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:01
CPC Classifications
C; C07; C07D; C07D493/00; C07D493/02; C07D493/08; C07C; C07C263/00; C07C263/16; C07C265/00; C07C265/02; C07C265/04; C08; C08F; C08F22/00; C08F22/10; C08F22/12; C08F22/22; C08G; C08G18/00; C08G18/02; C08G18/04; C08G18/06; C08G18/70; C08G18/72; C08G18/728; C08G18/74; C08G18/75; C08G18/758; C08G18/77; C08G18/771; C08G18/773; C08G18/81; C08G18/8125; C08G18/8141; C08J; C08J9/00; C08J9/04; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/564; Y; Y10; Y10S; Y10S528/00; Y10S528/905; Y10S528/906
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) | 1973-12-28 | 1974-06-29 | 1974-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-28 | 1978-06-29 | 1978-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-28 | 1982-06-29 | 1982-12-29 | $7700.00 | Window Closed / Lapsed |