US3061557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of reacting an active hydrogen containing compound with an isocyanate or isothiocyanate in contact with a polystannate catalyst
Assignee: Union Carbide Corp
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Filing: 1957-12-12
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Granted: 1962-10-30
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Expires: 1977-12-12
Abstract
No abstract record available.
Inventors
- 👤 Hostettler Fritz
- 👤 Eugene F Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:09
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; B; B01; B01J; B01J27/00; B01J27/06; B01J31/00; B01J31/02; B01J31/0201; B01J31/0211; B01J31/0212; B01J31/04; B01J31/12; B01J31/16; B01J31/22; B01J31/2204; B01J31/2208; B01J31/2226; B01J31/223; B01J31/2234; C07; C07F; C07F7/00; C07F7/003; C08G18/08; C08G18/16; C08G18/22; C08G18/24; B01J2531/00; B01J2531/10; B01J2531/16; B01J2531/40; B01J2531/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
METHOD WHICH COMPRISES REACTING AN ORGANIC COMPOUND CONTAINING A REACTIVE NCY GROUP IN WHICH Y IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND SULFUR WITH A SUBSTANCE HAVING REACTIVE HYDROGEN AS DETERMINED BY THE ZEREWITINOFF METHOD IN CONTACT WITH A CATALYTIC AMOUNT OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF ISOPROPOXYSTEAROXY POLYSTANNATE AND HYDROXYSTEAROXY POLYSTANNATE.
Claim 2
Dependent Claim
59 words
METHOD WHICH COMPRISES REACTING AN ORGANIC COMPOUND CONTAINING A REACTIVE NCY GROUP IN WHICH Y IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND SULFUR WITH A SUBSTANCE HAVING REACTIVE HYDROGEN AS DETERMINED BY THE ZEREWITINOFF METHOD IN CONTACT WITH A CATALYTIC AMOUNT OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF ISOPROPOXYSTEAROXY POLYSTANNATE AND HYDROXYSTEAROXY POLYSTANNATE.
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) | 1965-10-29 | 1966-04-30 | 1966-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-29 | 1970-04-30 | 1970-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-29 | 1974-04-30 | 1974-10-30 | $7700.00 | Window Closed / Lapsed |