US3290350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alpha, alpha, alpha', alpha'-tetramethyl-xylylene diisocyanates and alpha, alpha-dimethylisopropenylbenzyl isocyanates and the preparation thereof from isocyanic acid and olefins
Assignee: EIDP Inc
•
Filing: 1962-12-27
•
Granted: 1966-12-06
•
Expires: 1982-12-27
Abstract
No abstract record available.
Inventors
- 👤 Fred W Hoover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:40
CPC Classifications
C; C08; C08F; C08F26/00; C07; C07C; C07C265/00; C08F10/00; C08F12/00; C08F12/02; C08F12/04; C08F12/14; C08F12/26; C08F26/02; C08F8/00; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/32; C08G18/3225; C08G18/3228; C08G18/70; C08G18/72; C08G18/728; C08G18/74; C08G18/76; C08G18/7614; C08G18/7628; C08G18/765; C08G18/7657; C08G18/7692; C08G71/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31536; Y10T428/31551; Y10T428/31591
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND HAVING THE FORMULA
References Cited (Backward Citations)
US1992533A
Cited
US2511544A
Cited
US2394597A
Cited
US2606892A
Cited
US2503209A
Cited
US2611782A
Cited
US2723265A
Cited
US2866774A
Cited
US2861982A
Cited
US3050504A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |