US2700625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microporous sheet material and insoles for footwear
Assignee: BB Chemical Co
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Filing: 1951-05-23
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Granted: 1955-01-25
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Expires: 1971-05-23
Abstract
No abstract record available.
Inventors
- 👤 Thomas C Morris
- 👤 Edmond A Chandler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:18
CPC Classifications
A; A43; A43B; A43B13/00; A43B13/38; Y; Y10; Y10S; Y10S264/00; Y10S264/72
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
75 words
INSOLE MATERIAL IN THE FORM OF PARTICLES COMPRISING POLYVINYL RESINOUS MATERIAL PLASTICIZED WITH ABOUT 40 TO 100% OF ITS WEIGHT OF A PLASTICIZER, SAID PARTICLES BEING SINTERED INTO AN INTEGRAL LAYER WITH OPEN CAPILLARY CHANNELS, AND ONE SIDE OF SAID LAYER HAVING A DISCONTINUOUS BEING ADHERENT TO THE SURFACE OF SAID LAYER AND BEING HARD AT BODY TEMPERATURE, THE NUMBER OF SAID PARTICLES BEING INSUFFICIENT MATERIALLY TO ALTER THE AIR PERMEABILITY OF SAID INSOLE MATERIAL.
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) | 1958-01-24 | 1958-07-26 | 1959-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-24 | 1962-07-26 | 1963-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-24 | 1966-07-26 | 1967-01-25 | $7700.00 | Window Closed / Lapsed |