Patent US2624720A successfully refreshed from Google Patents.
US2624720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silicon-containing alkyd resins
Assignee: Libbey Owens Ford Glass Co
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Filing: 1949-02-23
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Granted: 1953-01-06
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Expires: 1969-02-23
Abstract
No abstract record available.
Inventors
- 👤 David B Hatcher
- 👤 Raymond H Bunnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:36
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A MODIFIED POLYHYDRIC ALCOHOL-POLYCARBOXYLIC ACID RESIN, WHEREIN SOME OF THE ALCOHOLIC HYDROXY RADICALS OF THE POLYHDRIC ALCOHOL ARE REPLACED BY GROUP EACH OF WHICH CONSISTS OF AN OXYGEN ATOM FORMING A LINKAGE BETWEEN THE POLYHYDRIC ALCOHOL RESIDE AND A SILICON ATOM IN AN ORGANOSILICON RADICAL COMPRISING, AS UNITS LINKED THROUGH POLYMERIZED OLEFINIC DOUBLE BONDS, (A) A UNIT OF THE CLASS CONSISTING OF MALEIC ANHYDRIDE AND NEUTRAL ESTERS OF BUTENEDIOIC ACIDS IN WHICH EACH OF THE ALCOHOL RADICALS IS OF THE CLASS CONSISTING OF 1-CHLORO-2-PROPYL, 2-CHLORO-EHTYL, BENZYL, TETRAHYDROFURFURYL, CYCLOHEXYL, PHENYL, CRESYL, AND PRIMARY AND SECONDARY ATOMS, AND (B) HAVING FROM ONE TO EIGHT CARBON ATOMS, AND (B) A UNIT HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
112 words
A MODIFIED POLYHYDRIC ALCOHOL-POLYCARBOXYLIC ACID RESIN, WHEREIN SOME OF THE ALCOHOLIC HYDROXY RADICALS OF THE POLYHDRIC ALCOHOL ARE REPLACED BY GROUP EACH OF WHICH CONSISTS OF AN OXYGEN ATOM FORMING A LINKAGE BETWEEN THE POLYHYDRIC ALCOHOL RESIDE AND A SILICON ATOM IN AN ORGANOSILICON RADICAL COMPRISING, AS UNITS LINKED THROUGH POLYMERIZED OLEFINIC DOUBLE BONDS, (A) A UNIT OF THE CLASS CONSISTING OF MALEIC ANHYDRIDE AND NEUTRAL ESTERS OF BUTENEDIOIC ACIDS IN WHICH EACH OF THE ALCOHOL RADICALS IS OF THE CLASS CONSISTING OF 1-CHLORO-2-PROPYL, 2-CHLORO-EHTYL, BENZYL, TETRAHYDROFURFURYL, CYCLOHEXYL, PHENYL, CRESYL, AND PRIMARY AND SECONDARY ATOMS, AND (B) HAVING FROM ONE TO EIGHT CARBON ATOMS, AND (B) A UNIT HAVING THE GENERAL FORMULA
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) | 1956-01-06 | 1956-07-07 | 1957-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-06 | 1960-07-07 | 1961-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-06 | 1964-07-07 | 1965-01-06 | $7700.00 | Window Closed / Lapsed |