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Patent US4343097A successfully refreshed from Google Patents.
US4343097A
Expired / Lapsed
US
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Shoes
Assignee: Sasaki Co Ltd
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Filing: 1980-08-08
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Granted: 1982-08-10
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Expires: 2000-08-08
Abstract
Abstract Shoes having an upper formed with a plurality of dimples with an air hole therein are proposed. Hot dieing to form dimples hardens the leather at the dimples, increasing the durability of the shoes. Thus, the shoes are highly durable even though they are provided with air holes in the upper.
Inventors
- 👤 Kyozo Sasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:14
CPC Classifications
A; A43; A43B; A43B7/00; A43B7/06; A43B7/08; A43B7/084; A43B7/085; A43B23/00; A43B23/02; A43B23/0205
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
72 words
A shoe having an upper, said upper having a plurality of hollow depressions in one of the surfaces thereof, each of said depressions having an air hole therein extending through the thickness of the material of the upper, the material of the upper between the surface of each of the hollow depressions and the opposite surface of the upper being denser and harder than the remainder of the material of the upper.
Claim 2
Dependent Claim
72 words
A shoe having an upper, said upper having a plurality of hollow depressions in one of the surfaces thereof, each of said depressions having an air hole therein extending through the thickness of the material of the upper, the material of the upper between the surface of each of the hollow depressions and the opposite surface of the upper being denser and harder than the remainder of the material of the upper.
Claim 3
Dependent Claim
21 words
The shoe as claimed in claim 1 wherein said uppers are of leather and said depressions are formed by hot dieing.
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) | 1985-08-09 | 1986-02-08 | 1986-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-09 | 1990-02-08 | 1990-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-09 | 1994-02-08 | 1994-08-10 | $7700.00 | Window Closed / Lapsed |