US2855417A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organotin compounds and process of preparation
Assignee: Primerica Inc
•
Filing: 1952-12-03
•
Granted: 1958-10-07
•
Expires: 1972-12-03
Abstract
No abstract record available.
Inventors
- 👤 Elliott L Weinberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:08
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/22; C07F7/2204; C08; C08K; C08K5/00; C08K5/56; C08K5/57; C08K5/58; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
86 words
A METHOD OF PREPARING A SULFUR-CONTAINING ORGANOTIN COMPOUND WHICH COMPRISES (1) ESTERIFYING B MOLES OF A DI-BASIC ACID COMPOUND SELECTED FROM THE GROUP CONSISTING OF DI-BASIC OF FORMULA HOOCR''COOH AND THEIR ANHYDRIDES, WITH A MOLES OF A HYDROXY COMPOUND OF FORMULA ROH; (2) REACTING THE REACTION PRODUCT OF (1) WITH C MOLES OF AN ORGANOTIN OXIDE OF FORMULA R"2SNO; (3) AND REACTING THE REACTION PRODUCT OF (2) WITH D MOLES OF AN ESTER OF A MERCAPTO SUBSTITUTED CARBOXYLIC ACIC, WHEREIN THE ESTER RADICAL HAS THE FORMULA
Claim 2
Independent Claim
86 words
A METHOD OF PREPARING A SULFUR-CONTAINING ORGANOTIN COMPOUND WHICH COMPRISES (1) ESTERIFYING B MOLES OF A DI-BASIC ACID COMPOUND SELECTED FROM THE GROUP CONSISTING OF DI-BASIC OF FORMULA HOOCR''COOH AND THEIR ANHYDRIDES, WITH A MOLES OF A HYDROXY COMPOUND OF FORMULA ROH; (2) REACTING THE REACTION PRODUCT OF (1) WITH C MOLES OF AN ORGANOTIN OXIDE OF FORMULA R"2SNO; (3) AND REACTING THE REACTION PRODUCT OF (2) WITH D MOLES OF AN ESTER OF A MERCAPTO SUBSTITUTED CARBOXYLIC ACIC, WHEREIN THE ESTER RADICAL HAS THE FORMULA
Claim 3
Dependent Claim
14 words
AS A COMPOSITION OF MATTER THE REACTION PRODUCT OF THE PROCESS OF CLAIM 1.
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) | 1961-10-06 | 1962-04-07 | 1962-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-06 | 1966-04-07 | 1966-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-06 | 1970-04-07 | 1970-10-07 | $7700.00 | Window Closed / Lapsed |