Patent US4242782A successfully refreshed from Google Patents.
Patent US3280215A successfully refreshed from Google Patents.
US3280215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modification of epoxy polymer with coumarone-indene resin
Assignee: Ceilcote Co Inc
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Filing: 1962-09-10
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Granted: 1966-10-18
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Expires: 1982-09-10
Abstract
No abstract record available.
Inventors
- 👤 Wesley A Severance
- 👤 Jerry L Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:42
CPC Classifications
C; C08; C08L; C08L45/00; C08L45/02; C08L63/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A COMPOSITION COMPRISINGA ABOUT 50 PARTS BY WEIGHT OF A REACTION PRODUCT OF EPICHLOROHYDRIN AND AN ORGANIC POLHYDRIC ALCOHOL HAVING TOW OR THREE HYDROXYL GROUPS AND 3 TO 17 CARBON ATOMS, THE REACTION PRODUCT HAVING AN EPOXIDE EQUIVALENT WEIGHT GREATER THAN ABOUT 100, ABOUT 5 TO 75 PARTS BY WEIGHT OF A THERMOPLASTIC COUMARONEINDENE RESIN THAT IS A POLYMER OF A DIISTILLATE OF THE GROUP CONSISTING OF COAL TAR, WATER GAS TAR AND PETROLEUM TAR, THE DISTILLATE HAVING THE PROPERTIES AND POLYMERIZABLE INGREDIENT OF A COAL-TAR DISTILLATE HAVING A BOILING POINT OF ABOUT 80*C. TO 210*C., SAID POLYMERIZABLE INGREDIENTS THEREIN INCLUDING COUMARONE AND INDENE THAT ARE POLYMERIZABKE TO A COUMARONE-INDENE RESIN, AND ABOUT 1 TO 12 PARTS BY WEIGHT OF A CURING AGENT FOR SAID REACTION PRODUCT.
Claim 2
Dependent Claim
127 words
A COMPOSITION COMPRISINGA ABOUT 50 PARTS BY WEIGHT OF A REACTION PRODUCT OF EPICHLOROHYDRIN AND AN ORGANIC POLHYDRIC ALCOHOL HAVING TOW OR THREE HYDROXYL GROUPS AND 3 TO 17 CARBON ATOMS, THE REACTION PRODUCT HAVING AN EPOXIDE EQUIVALENT WEIGHT GREATER THAN ABOUT 100, ABOUT 5 TO 75 PARTS BY WEIGHT OF A THERMOPLASTIC COUMARONEINDENE RESIN THAT IS A POLYMER OF A DIISTILLATE OF THE GROUP CONSISTING OF COAL TAR, WATER GAS TAR AND PETROLEUM TAR, THE DISTILLATE HAVING THE PROPERTIES AND POLYMERIZABLE INGREDIENT OF A COAL-TAR DISTILLATE HAVING A BOILING POINT OF ABOUT 80*C. TO 210*C., SAID POLYMERIZABLE INGREDIENTS THEREIN INCLUDING COUMARONE AND INDENE THAT ARE POLYMERIZABKE TO A COUMARONE-INDENE RESIN, AND ABOUT 1 TO 12 PARTS BY WEIGHT OF A CURING AGENT FOR SAID REACTION PRODUCT.
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) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |