US2902474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1,3 bis (3-isocyanato-o-tolyl) urea and curing polyurethane elastomers therewith
Assignee: EIDP Inc
•
Filing: 1956-01-25
•
Granted: 1959-09-01
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Expires: 1976-01-25
Abstract
No abstract record available.
Inventors
- 👤 Robert G Arnold
- 👤 Donald M Simons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:23
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/77; C08G18/78; C08G18/7806; C08G18/7818; C08G18/7825; C07; C07C; C07C275/00; C07C275/28; C07C275/40; C08G18/08; C08G18/10; Y; Y10; Y10S; Y10S528/00; Y10S528/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
1,3-BIS(3-ISOCYANATO-O-TOLYL) UREA HAVING THE FORMULA
Claim 2
Dependent Claim
5 words
1,3-BIS(3-ISOCYANATO-O-TOLYL) UREA HAVING THE FORMULA
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) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |