Patent US3745549A successfully refreshed from Google Patents.
Patent US2805182A successfully refreshed from Google Patents.
US2805182A
Expired / Lapsed
US
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Elastic polyurethane elastomer composites
Assignee: Goodrich Corp
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Filing: 1955-12-22
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Granted: 1957-09-03
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Expires: 1975-12-22
Abstract
No abstract record available.
Inventors
- 👤 Victor L Hallenbeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:07
CPC Classifications
B; B32; B32B; B32B27/00; Y; Y10; Y10S; Y10S198/00; Y10S198/957; Y10T; Y10T24/00; Y10T24/16; Y10T24/1664; Y10T428/00; Y10T428/25; Y10T428/31504; Y10T428/31551; Y10T428/31569; Y10T428/31971
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
74 words
A COMPOSITE ELASTIC STRUCTURE COMPRISING IN ADHERENT RELATION A FIRST LAYER OF A VULCANIZED COMPOUND OF AN ELASTOMERIC POLYESTERURETHANE AND AN ORGANIC DIISOCYANATE, AN INNER LAYER COMPRISING A VULCANIZED COMPOUND OF NATURAL RUBBER CONTAINING INTIMATELY DISPERSED THEREIN ABOUT 75 WEIGHT PARTS OF FINELY DIVIDED SUCROSE HAVING AN AVERAGE PARTICLE SIZE BETWEEN ABOUT 50 AND 100 MICRONS PER 100 WEIGHT PARTS OF NATURAL RUBBER, AND AN OUTER LAYER COMPRISING A VULCANIZED COMPOUND OF NATURAL RUBBER.
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) | 1960-09-02 | 1961-03-04 | 1961-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-02 | 1965-03-04 | 1965-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-02 | 1969-03-04 | 1969-09-03 | $7700.00 | Window Closed / Lapsed |