US3352830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethanes from 1-isocyanato-3-isocyanatomethyl-3, 5, 5-tri-alkylcyclohexane
Assignee: Scholven Chemie AG
•
Filing: 1965-07-16
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Granted: 1967-11-14
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Expires: 1985-07-16
Abstract
No abstract record available.
Inventors
- 👤 Schmitt Karl
- 👤 Gude Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:26
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/74; C08G18/75; C08G18/751; C08G18/752; C08G18/753; C08G18/755; C08G18/757; Y; Y10; Y10S; Y10S528/00; Y10S528/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
POLYURETHANE OF 1-ISOCYANATO-3-ISOCYANATOMETHYL-3, 5,5-TRIALKYLCYCLOHEXANE AND AN ALCOHOL CONTAINING AT LEAST 2 HYDROXY GROUPS.
Claim 2
Dependent Claim
13 words
POLYURETHANE OF 1-ISOCYANATO-3-ISOCYANATOMETHYL-3, 5,5-TRIALKYLCYCLOHEXANE AND AN ALCOHOL CONTAINING AT LEAST 2 HYDROXY GROUPS.
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) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |