Patent US2805234A successfully refreshed from Google Patents.
US2805234A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for production of tetra-alkyl tin compound having at least 10 carbon atoms per alkyl radical
Assignee: Primerica Inc
•
Filing: 1954-05-12
•
Granted: 1957-09-03
•
Expires: 1974-05-12
Abstract
No abstract record available.
Inventors
- 👤 Carl R Gloskey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:56
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/22; C07F7/2208
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A METHOD OF PREPARING TETRA-ALKYL TIN COMPOUNDS COMPRISING REACTING ALKYL HALIDES AVERAGING AT LEAST 10 CARBON ATOMS PER ALKYL RADICAL WITH STANNIC HALIDE IN THE PRESENCE OF SODOUM AT TEMPERATURES FROM ABOUT 110* C. TO 132*C.
Claim 2
Independent Claim
36 words
A METHOD OF PREPARING TETRA-ALKYL TIN COMPOUNDS COMPRISING REACTING ALKYL HALIDES AVERAGING AT LEAST 10 CARBON ATOMS PER ALKYL RADICAL WITH STANNIC HALIDE IN THE PRESENCE OF SODOUM AT TEMPERATURES FROM ABOUT 110* C. TO 132*C.
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) | 1960-09-02 | 1961-03-04 | 1961-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-02 | 1965-03-04 | 1965-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-02 | 1969-03-04 | 1969-09-03 | $7700.00 | Window Closed / Lapsed |