US3392153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tin catalysts for the reactions of organic polysiocyanates and polyethers
Assignee: Union Carbide Corp
•
Filing: 1957-09-25
•
Granted: 1968-07-09
•
Expires: 1977-09-25
Abstract
No abstract record available.
Inventors
- 👤 Hostettler Fritz
- 👤 Eugene F Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:58
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/12; B01J31/122; C; C07; C07F; C07F7/00; C07F7/22; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/22; C08G18/24; C08G18/242; C08G18/28; C08G18/30; C08G18/38; C08G18/40; C08G18/42; C08G18/4266; C08G18/4269; C08G18/4277; C08G18/48; C08G18/62; C08G18/64; C08G18/6415; C08G18/6446; C08G18/6484; C08G18/70; C08G18/72; C08G18/77
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
THE METHOD WHICH COMPRISES REACTING A POLYOXYALKYLENE POYOL WITH AN ORGANIC COMPOUND CONTAINING A REACTIVE -N=C=Y GROUP IN WHICH Y IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND SULFUR IN THE PROCESS OF A CATALYTIC AMOUNT OF AN ORGANO TINCOMPOUND HAVING AT LEAST ONE CARBON TO TIN BOND, ANY REMAINING BONDS FROM TIN BEING TO A MEMBER SELECTED FROM A GROUP CONSISTING OF HALOGEN, HYDORGEN, OXYGEN, SULFUR, NITROGEN AND PHOSPHORUS ATOMS.
Claim 2
Independent Claim
74 words
THE METHOD WHICH COMPRISES REACTING A POLYOXYALKYLENE POYOL WITH AN ORGANIC COMPOUND CONTAINING A REACTIVE -N=C=Y GROUP IN WHICH Y IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND SULFUR IN THE PROCESS OF A CATALYTIC AMOUNT OF AN ORGANO TINCOMPOUND HAVING AT LEAST ONE CARBON TO TIN BOND, ANY REMAINING BONDS FROM TIN BEING TO A MEMBER SELECTED FROM A GROUP CONSISTING OF HALOGEN, HYDORGEN, OXYGEN, SULFUR, NITROGEN AND PHOSPHORUS ATOMS.
References Cited (Backward Citations)
US2374136A
Cited
DE860109C
Cited
US2475520A
Cited
US2650212A
Cited
US2764565A
Cited
US2720507A
Cited
US2833732A
Cited
US2893898A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |