US2740772A
Expired / Lapsed
US
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Side-chain crystalline copolymers from polymerizable monomers having a substituent crystallizable organic group and having no substituent crystallizable group respectively
Assignee: L A Dreyfus Co
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Filing: 1949-12-08
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Granted: 1956-04-03
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Expires: 1969-12-08
Abstract
No abstract record available.
Inventors
- 👤 Jr Turner Alfrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:57
CPC Classifications
A; A23; A23G; A23G4/00; A23G4/06; A23G4/08; C; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C08F220/16; C08F220/18; C08F220/1812; C08F220/1818
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A CHEWING GUM BASE SIDE CHAIN CRYSTALLINE COPOLYMER HAVING DUAL PROPERTIES OF BASE FIRMNESS DUE TO A FIRM WAXY STRUCTURE AT ROOM TEMPERATURE AND VISCO ELASTIC PROPERTIES AT BODY TEMPERATURE, OF METHYL METHACRYLATE WITH A C14 TO C18 ALKYL ESTER OF AN ACID HAVING THE FORMULA CH2=CR.COO.H WHERE R IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND METHYL, THE MOLAR RATIO OF METHYL METHACRYLATE TO C14 TO C18 ALKYL ESTER BEING FROM 1:1 TO 1:2.
Claim 2
Dependent Claim
76 words
A CHEWING GUM BASE SIDE CHAIN CRYSTALLINE COPOLYMER HAVING DUAL PROPERTIES OF BASE FIRMNESS DUE TO A FIRM WAXY STRUCTURE AT ROOM TEMPERATURE AND VISCO ELASTIC PROPERTIES AT BODY TEMPERATURE, OF METHYL METHACRYLATE WITH A C14 TO C18 ALKYL ESTER OF AN ACID HAVING THE FORMULA CH2=CR.COO.H WHERE R IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND METHYL, THE MOLAR RATIO OF METHYL METHACRYLATE TO C14 TO C18 ALKYL ESTER BEING FROM 1:1 TO 1:2.
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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) | 1959-04-03 | 1959-10-03 | 1960-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-03 | 1963-10-03 | 1964-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-03 | 1967-10-03 | 1968-04-03 | $7700.00 | Window Closed / Lapsed |