US2630442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organotin phosphate esters
Assignee: Primerica Inc
•
Filing: 1949-05-21
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Granted: 1953-03-03
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Expires: 1969-05-21
Abstract
No abstract record available.
Inventors
- 👤 James M Church
- 👤 Hugh E Ramsden
- 👤 Hirschland Herbert
- 👤 Harry W Buchanan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:40
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F7/00; C07F7/22; C07F7/2224; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
139 words
AN ORGANOTIN PHOSPHATE ESTER CONSISTING OF AT LEAST ONE ORGANOTIN PORTION CONNECTED TO THE PHOSPHATE GROUP THROUGH TIN, SAID PORTION CONSISTING OF TOW TO THREE ORGANIC RADICALS CONNECTED TO TIN WITH SAID ORGANIC RADICALS BEING SELECTED FROM THE CLASS CONSISTING OF ALKYL AND ARYL RADICALS, SAID ALKYL RADICALS HAVING UP TO 16 CARBON ATOMS PER RADICAL, EACH SAID TIN ATOM BEING CONNECTED TO THE PHOSPHATE GROUP THROUGH AT LEAST ONE OXYGEN ATOM OF SAID GROUP, SAID ESTER PORTION BEING CONNECTED TO THE PHOSPHATE GROUP AND CONSISTING OF ONE TO TWO ORGANIC RADICALS SELECTED FROM THE CLASS CONSISTING OF ALKYL AND ARYL RADICALS, SAID LAST MENTIONED ALKYL RADICALS HAVING AT LEAST 4 CARBON ATOMS PER RADICAL, AND EACH SAID ORGANIC RADICAL OF SAID ESTER PORTION BEING CONNECTED TO THE PHOSPHATE GROUP THROUGH AT LEAST ONE OXYGEN ATOM OF SAID GROUP.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-02 | 1956-09-01 | 1957-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-02 | 1960-09-01 | 1961-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-02 | 1964-09-01 | 1965-03-03 | $7700.00 | Window Closed / Lapsed |