Patent US3256253A successfully refreshed from Google Patents.
US3256253A
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Process for the production of organic tin compounds
Assignee: Studiengesellschaft Kohle gGmbH
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Filing: 1963-03-18
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Granted: 1966-06-14
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Expires: 1983-03-18
Abstract
No abstract record available.
Inventors
- 👤 Neumann Wilhelm Paul
- 👤 Niermann Horst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:30
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/12; C07; C07F; C07F7/00; C07F7/22; C07F7/2208; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/93; Y10S585/931
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A PROCESS FOR ALKYLATING TIN WHICH COMPRISES CONTACTING ORGANO TIN HYDRIDE SELECTED FROMTHE GROUP CONSISTING OF MONO, DI AND TRI TIN HYDRIDES WITH OLEFIN IN THE PRESENCE OF AN ALUMINUM-CONTAINING METAL HYDRIDE AS CATALYST, THE ALUMINUM-CONTAINING METAL HYDRIDE BEING PRESENT IN AMOUNT OF AT LEAST ABOUT 1 MOL PERCENT OF THE ORGANO TIN HYDRIDE.
Claim 2
Dependent Claim
54 words
A PROCESS FOR ALKYLATING TIN WHICH COMPRISES CONTACTING ORGANO TIN HYDRIDE SELECTED FROMTHE GROUP CONSISTING OF MONO, DI AND TRI TIN HYDRIDES WITH OLEFIN IN THE PRESENCE OF AN ALUMINUM-CONTAINING METAL HYDRIDE AS CATALYST, THE ALUMINUM-CONTAINING METAL HYDRIDE BEING PRESENT IN AMOUNT OF AT LEAST ABOUT 1 MOL PERCENT OF THE ORGANO TIN HYDRIDE.
References Cited (Backward Citations)
US3098088A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |