US3616170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foamed sheet for making stiffening elements
Assignee: Individual
•
Filing: 1970-06-01
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Granted: 1971-10-26
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Expires: 1990-06-01
Abstract
Abstract A novel sheet material particularly useful in formation of a stiffening structure for incorporation into shoe counters and the like, the structure comprising a foam sheet and a fabric sheet adherent thereon, the foamed sheet being formed of a thermoplastic elastomer and accounting for the major part of the thickness of the completed element.
Inventors
- 👤 Addison W Closson Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:37
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/245; A; A43; A43B; A43B23/00; A43B23/08; A43B23/16; A43B23/17; B29; B29D; B29D35/00; B29D35/12; B29D35/14; B29D35/142; B32B7/00; B32B7/04; B32B7/12; D; D06; D06N; D06N3/00; D06N3/04; D06N3/10; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0221; B32B2266/0292; B32B2307/00; B32B2307/70; B32B2307/724; B32B2309/00; B32B2309/08; B32B2309/10; B32B2309/105; B32B2437/00; B32B2437/02; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/26; Y10T442/00; Y10T442/20; Y10T442/2139; Y10T442/2361
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
20 words
A thermoformable sheet element as defined in claim 1 wherein said laminate is from 0.05 to 0.10 inch in thickness.
Claim 2
Dependent Claim
15 words
A sheet element as defined in claim 1 wherein said fabric is a drilling fabric.
Claim 3
Dependent Claim
15 words
A sheet element as defined in claim 2 wherein said fabric is a drilling fabric.
Claim 4
Dependent Claim
21 words
A sheet element as defined in claim 1 wherein the Vicat softening point of the foamed thermoplastic is over 140* F.
Claim 5
Dependent Claim
20 words
A sheet element as defined in claim 3 wherein said thickness of said sheet element is below about 0.10 inch.
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) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |