US3013906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyester film material and process for making same
Assignee: General Electric Co
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Filing: 1959-03-20
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Granted: 1961-12-19
•
Expires: 1979-03-20
Abstract
No abstract record available.
Inventors
- 👤 Ralph G Flowers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:19
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; C08J2367/00; C08J2367/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
THE METHOD OF MAKING ELECTRICAL INSULATING MATERIAL WHICH COMPRISES REACTING WITH POLYMETHYLENE POLYPHENYLISOCYANATE A POLYESTER RESIN FILM MATERIAL COMPRISING THE PRODUCT OF REACTION OF A MIXTURE OF INGREDIENTS COMPRISING A DIHYDRIC ALIPHATIC ALCOHOL AND A DIBASIC AROMATIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF TEREPHTHALIC ACID, ISOPHTHALIC ACID, DIALKYL TEREPHTHALATES, DIALKYL ISOPHTHALATES, AND MIXTURES THEREOF.
Claim 2
Independent Claim
55 words
THE METHOD OF MAKING ELECTRICAL INSULATING MATERIAL WHICH COMPRISES REACTING WITH POLYMETHYLENE POLYPHENYLISOCYANATE A POLYESTER RESIN FILM MATERIAL COMPRISING THE PRODUCT OF REACTION OF A MIXTURE OF INGREDIENTS COMPRISING A DIHYDRIC ALIPHATIC ALCOHOL AND A DIBASIC AROMATIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF TEREPHTHALIC ACID, ISOPHTHALIC ACID, DIALKYL TEREPHTHALATES, DIALKYL ISOPHTHALATES, AND MIXTURES THEREOF.
References Cited (Backward Citations)
GB533733A
Cited
US2503209A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-18 | 1965-06-19 | 1965-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-18 | 1969-06-19 | 1969-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-18 | 1973-06-19 | 1973-12-19 | $7700.00 | Window Closed / Lapsed |