US3027393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of organotin compounds
Assignee: Kali Chemie AG
•
Filing: 1957-07-11
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Granted: 1962-03-27
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Expires: 1977-07-11
Abstract
No abstract record available.
Inventors
- 👤 Jenkner Herbert
- 👤 Schmidt Hans Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:38
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/22; C07F7/2208
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A METHOD FOR THE PREPARATION OF ALKYL TIN AND ALKYL TIN CHLORIDES, COMPRISING HEATING A MEMBER OF THE GROUP CONSISTING OF TIN TETRACHLORIDE, ALKAALI METAL TIN CHLORIDE, AND ALKYL TIN CHLORIDE AT A TEMPERATURE OF 40 TO 200*C. WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS OF THE FORMULA
Claim 2
Independent Claim
51 words
A METHOD FOR THE PREPARATION OF ALKYL TIN AND ALKYL TIN CHLORIDES, COMPRISING HEATING A MEMBER OF THE GROUP CONSISTING OF TIN TETRACHLORIDE, ALKAALI METAL TIN CHLORIDE, AND ALKYL TIN CHLORIDE AT A TEMPERATURE OF 40 TO 200*C. WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS OF THE FORMULA
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) | 1965-03-26 | 1965-09-25 | 1966-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-26 | 1969-09-25 | 1970-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-26 | 1973-09-25 | 1974-03-27 | $7700.00 | Window Closed / Lapsed |