US3708332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shoe stiffener
Assignee: PROCTER LAMINAR CORP
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Filing: 1969-09-10
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Granted: 1973-01-02
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Expires: 1989-09-10
Abstract
Abstract A PROCESS FOR MAKING A NOVEL STIFFENING ELEMENT OF THE TYPE COMPRISING A RESILIENT POLYMER AND A POROUS SUBSTRATE COMBINED INTO A INTEGRAL STRUCTURE, SAID PROCESS COMPRISING THE STEPS OF COATING A FABRIC WITH AN AQUEOUS DISPERSION OF THE RESILIENT POLYMER TO ACHIEVE A SUPERIOR BOND OF THE POLYMER THERETO AND DRYING THE DISPERSION TO FORM AN ELASTOMERIC COATING. IN THE MOST ADVANTAGEOUS EMBODIMENT OF THE INVENTION, A PRESSURE-SENSITIVE ADHESIV IS APPLIED OVER THE SURFACE OF THE ELASTOMER.
Inventors
- 👤 A Closson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:11
CPC Classifications
D; D06; D06N; D06N3/00; D06N3/12; D06N3/14; D06N3/04; D06N3/042; D06N3/045; D06N2211/00; D06N2211/10; D06N2211/106; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/269; Y10T442/00; Y10T442/20; Y10T442/2361; Y10T442/2738; Y10T442/2746; Y10T442/60; Y10T442/681
Claims Analysis
Total Claims: 0
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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) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |