Patent US3577662A successfully refreshed from Google Patents.
US3577662A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Footwear
Assignee: Individual
•
Filing: 1970-01-14
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Granted: 1971-05-04
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Expires: 1990-01-14
Abstract
Abstract A sandal having a sole and a band member integrally molded from synthetic resinous material having a foamy interior and a nonfoamy exterior. The specific gravity of the sole is lower than the specific gravity of the band member.
Inventors
- 👤 Tatsuo Fukuoka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:31
CPC Classifications
A; A43; A43B; A43B3/00; A43B3/10; A43B3/101; A43B3/102
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
47 words
A footwear comprising a band member and a sole member both of which are integrally and inseparably molded from synthetic resinous material having foamy interior, said sole member of which specific gravity being lower than that of the band member with the difference approximately 0.2 to 0.4.
Claim 2
Dependent Claim
47 words
A footwear comprising a band member and a sole member both of which are integrally and inseparably molded from synthetic resinous material having foamy interior, said sole member of which specific gravity being lower than that of the band member with the difference approximately 0.2 to 0.4.
Claim 3
Dependent Claim
31 words
A footwear as claimed in claim 1, wherein said specific gravity of the band member is approximately 0.70 to 0.96 while that of the sole member being approximately 0.40 to 0.66.
Claim 4
Dependent Claim
25 words
A footwear as claimed in claim 1, wherein said foamy interior is provided with a relatively firm and nonfoamy outer layer integral therewith around thereof.
Claim 5
Dependent Claim
33 words
A footwear as claimed in claims 1, 2 or 3, wherein said sole member is provided with a unique upper surface formed with a shape in conformity with profile of the user''s sole.
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) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |