Patent US3401150A successfully refreshed from Google Patents.
US3401150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing condensation polyester resins
Assignee: Goodyear Tire and Rubber Co
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Filing: 1965-07-02
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Granted: 1968-09-10
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Expires: 1985-07-02
Abstract
No abstract record available.
Inventors
- 👤 William J Carney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:45
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/0006; C; C08; C08G; C08G63/00; C08G63/78; C08G63/785
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
THE PROCESS OF PREPARING HIGH MOLECULAR WEIGHT CONDENSATION POLYESTER RESINS WHICH COMPRISES SUBJECTING A POLYESTER-FORMING REACTION MIXTURE TO CONDENSATION AT ELEVATED TEMPERATURE AND REDUCED PRESSURE IN LIQUID STATE, SAID MIXTURE INCREASING IN VISCOSITY AS IT CONDENSES WHILE MIXING SAID MIXTURE WITH A ROTATING AGITATOR AND SUPPLYING POWER TO THE AGITATOR AT AN INCREASING ENERGY LEVEL UNTIL THE POWER REQUIRED TO TURN SAID AGITATOR AT THE RATE OF ROTATION BEING USED ATTAINS A DESIRED LEVEL AND THERE-
Claim 2
Dependent Claim
76 words
THE PROCESS OF PREPARING HIGH MOLECULAR WEIGHT CONDENSATION POLYESTER RESINS WHICH COMPRISES SUBJECTING A POLYESTER-FORMING REACTION MIXTURE TO CONDENSATION AT ELEVATED TEMPERATURE AND REDUCED PRESSURE IN LIQUID STATE, SAID MIXTURE INCREASING IN VISCOSITY AS IT CONDENSES WHILE MIXING SAID MIXTURE WITH A ROTATING AGITATOR AND SUPPLYING POWER TO THE AGITATOR AT AN INCREASING ENERGY LEVEL UNTIL THE POWER REQUIRED TO TURN SAID AGITATOR AT THE RATE OF ROTATION BEING USED ATTAINS A DESIRED LEVEL AND THERE-
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) | 1971-09-10 | 1972-03-11 | 1972-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-10 | 1976-03-11 | 1976-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-10 | 1980-03-11 | 1980-09-10 | $7700.00 | Window Closed / Lapsed |