US3817893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic elastomeric compositions
Assignee: EIDP Inc
•
Filing: 1972-12-22
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Granted: 1974-06-18
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Expires: 1992-12-22
Abstract
Abstract DISCLOSED HEREIN ARE THERMOPLASTIC ELASTOMERIC COMPOSITIONS COMPRISING (A) ETHYLENE-VINYL ACETATE COPOLYMER CONTAINING ABOUT 33% TO 50& BY WEIGHT OR VINYL ACETATE, (B) ABOUT 10 TO 50 PARTS PER 100 PARTS OF (A) OF MINERAL OIL AND (C) UP TO ABOUT 15 PARTS PER 100 PARTS OF (A) OF A LOW-MELTING WAX. THE COMPOSITIONS ARE READILY DEFORMABLE WITH LOSS OF ELASTICITY IN THE TEMPERATURE RANGE OFG ABOUT 45*C TO 85*C., REGAINING DIMENSIONAL STABILITY AND ELASTICITY BELOW ABOUT 45*C. THESE COMPOSITIONS ARE USEFUL INTER ALIA, IN FABRICATING CUSTOM-FITTED EARPLUGS.
Inventors
- 👤 E Gladding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:31
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08K; C08K5/00; C08K5/01; C08L23/0846; C08L23/0853; C08L91/00; C08L91/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |