US3821135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Granular cork-polyurethane composition and products thereof
Assignee: CUSHIONED PROD CORP
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Filing: 1972-04-06
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Granted: 1974-06-28
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Expires: 1992-04-06
Abstract
Abstract Cork Particles and a polyurethane resin are combined in a new composition. The mixture of cork particles with a liquid resin initially provides a free-flowing material which is easily handled without agglomeration. The mixture, when molded by the application of heat and pressure, produces a light weight, resilient, porous substance having a wide variety of uses such as innersoles for shoes and the like.
Inventors
- 👤 R King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:26
CPC Classifications
C; C08; C08L; C08L75/00; C08L75/04; C08J; C08J9/00; C08J9/33; C08L97/00; C08L97/007; C08J2397/00; C08J2397/02; C08J2475/00; C08J2475/04; Y; Y10; Y10S; Y10S264/00; Y10S264/07; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249986; Y10T428/25; Y10T428/253; Y10T428/26; Y10T428/268; Y10T428/31504; Y10T428/31551; Y10T428/31591
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A shaped article comprising the permanently compressed molding composition of claim 1.
Claim 2
Dependent Claim
13 words
The shaped article of claim 2 in the form of a shoe innersole.
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) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-27 | 1981-12-27 | 1982-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-27 | 1985-12-27 | 1986-06-28 | $7700.00 | Window Closed / Lapsed |