Patent US2655486A successfully refreshed from Google Patents.
US2655486A
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Tetrahydrophthalic alkyd resins
Assignee: FRED K A STRESEN REUTER Inc
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Filing: 1950-09-27
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Granted: 1953-10-13
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Expires: 1970-09-27
Abstract
No abstract record available.
Inventors
- 👤 Alexander C Keyl
- 👤 Robert H Geils
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:07
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/52; C08G63/54; C08G63/553
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
THE METHOD OF FORMING AN ALKYD RESIN COMPRISING SIMULTANEOUSLY ESTERIFYING AND CONDENSING AN INTERMEDIATE PRODUCT, COMPRISING A MONOMERIC TETRAHYDROPHTHALIC ACID HALF ESTER OF A MONOESTER OF A 10 TO 22 CARBON ATOM FATTY ACID WITH A POLYHYDRIC ALIPHATIC ALCOHOL HAVING AT LEAST THREE HYDROXYL GROUPS, WITH AN ESTERIFYING AGENT SELECTED FROM THE GROUP CONSISTING OF A 10 TO 22 CARBON ATOM FATTY ACID, A NATURAL RESIN ACID AND HYDROGENATION PRODUCTS THEREOF, A POLYCARBOXYLIC ORGANIC ACID AND ANHYDRIDES THEREOF AND POLYHYDRIC ALIPHATIC ALCOHOLS.
Claim 2
Independent Claim
82 words
THE METHOD OF FORMING AN ALKYD RESIN COMPRISING SIMULTANEOUSLY ESTERIFYING AND CONDENSING AN INTERMEDIATE PRODUCT, COMPRISING A MONOMERIC TETRAHYDROPHTHALIC ACID HALF ESTER OF A MONOESTER OF A 10 TO 22 CARBON ATOM FATTY ACID WITH A POLYHYDRIC ALIPHATIC ALCOHOL HAVING AT LEAST THREE HYDROXYL GROUPS, WITH AN ESTERIFYING AGENT SELECTED FROM THE GROUP CONSISTING OF A 10 TO 22 CARBON ATOM FATTY ACID, A NATURAL RESIN ACID AND HYDROGENATION PRODUCTS THEREOF, A POLYCARBOXYLIC ORGANIC ACID AND ANHYDRIDES THEREOF AND POLYHYDRIC ALIPHATIC ALCOHOLS.
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) | 1956-10-12 | 1957-04-13 | 1957-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-12 | 1961-04-13 | 1961-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-12 | 1965-04-13 | 1965-10-13 | $7700.00 | Window Closed / Lapsed |