US2857413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organotin compounds and process of preparation
Assignee: Primerica Inc
•
Filing: 1954-03-22
•
Granted: 1958-10-21
•
Expires: 1974-03-22
Abstract
No abstract record available.
Inventors
- 👤 Elliott L Weinberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:14
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/22; C08; C08K; C08K5/00; C08K5/56; C08K5/57
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
124 words
A METHOD WHICH COMPRISES REACTING A HYDROXY COMPOUND OF FORMULA R''OH AND A DIBASIC ACID COMPOUND SELECTED FROM THE GROUP CONSISTING OF DIBASIC ACIDS OF FORMULA HOOCR"COOH AND THEIR ANHYDRIDES TO FORM AN ESTER REACTION MIXTURE CONTAINING UNESTERIFIED DIBASIC ACID COMPOUND, AND REACTING SAID ESTER REACTION MIXTURE WITH A HYDROCARBONTIN OXIDE OF FORMULA R2SNO, WHEREIN R IS A MONOVALENT HYDROCARBON RADICAL OF AT LEAST 2 CARBON ATOMS SELECTED FROM THE CLASS CONSISTING OF ALKYL, ARYL HYDROCARBON, AND ARALKYL HYDROCARBON RADICALS; R'' IS A MONOVALENT HYDROCARBON RADICAL SELECTED FROM THE CLASS CONSISTING OF ALKYL, CYCLOALIPHATIC HYDROCARBON, ARYL HYDROCARBON AND ARALKYL HYDROCARBON; AND R" IS A DIVALENT HYDROCARBON RADICAL SELECTED FROM THE CLASS CONSISTING OF LOWER ALKYLENE, ETHYLENIC UNSATURATED ALIPHATIC HYDROCARBON RADICALS AND AROMATIC HYDROCARBON RADICALS.
Claim 2
Independent Claim
124 words
A METHOD WHICH COMPRISES REACTING A HYDROXY COMPOUND OF FORMULA R''OH AND A DIBASIC ACID COMPOUND SELECTED FROM THE GROUP CONSISTING OF DIBASIC ACIDS OF FORMULA HOOCR"COOH AND THEIR ANHYDRIDES TO FORM AN ESTER REACTION MIXTURE CONTAINING UNESTERIFIED DIBASIC ACID COMPOUND, AND REACTING SAID ESTER REACTION MIXTURE WITH A HYDROCARBONTIN OXIDE OF FORMULA R2SNO, WHEREIN R IS A MONOVALENT HYDROCARBON RADICAL OF AT LEAST 2 CARBON ATOMS SELECTED FROM THE CLASS CONSISTING OF ALKYL, ARYL HYDROCARBON, AND ARALKYL HYDROCARBON RADICALS; R'' IS A MONOVALENT HYDROCARBON RADICAL SELECTED FROM THE CLASS CONSISTING OF ALKYL, CYCLOALIPHATIC HYDROCARBON, ARYL HYDROCARBON AND ARALKYL HYDROCARBON; AND R" IS A DIVALENT HYDROCARBON RADICAL SELECTED FROM THE CLASS CONSISTING OF LOWER ALKYLENE, ETHYLENIC UNSATURATED ALIPHATIC HYDROCARBON RADICALS AND AROMATIC HYDROCARBON RADICALS.
Claim 3
Dependent Claim
9 words
A PRODUCT MADE BY 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) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |