Patent US3493592A successfully refreshed from Google Patents.
US3493592A
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Preparation of dialkyltins and dialkyltin oxides
Assignee: Ethyl Corp
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Filing: 1968-01-15
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Granted: 1970-02-03
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Expires: 1988-01-15
Abstract
No abstract record available.
Inventors
- 👤 Hymin Shapiro
- 👤 Paul Kobetz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:11
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/22; C07F7/2224; C07F7/2208
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3103526A
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US3061647A
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US3072697A
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US3027393A
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US3254009A
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US3016397A
Cited
US3287386A
Cited
US3095433A
Cited
US3288828A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |