US3390213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacture of footwear
Assignee: Ro Search Inc
•
Filing: 1962-09-17
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Granted: 1968-06-25
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Expires: 1982-09-17
Abstract
No abstract record available.
Inventors
- 👤 Ernest E Rollman
- 👤 Liebscher Anton
- 👤 Szerenyi Andrew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:20
CPC Classifications
B; B29; B29D; B29D35/00; B29D35/0009; B29D35/0018; B29D35/0027; A; A43; A43D; A43D25/00; A43D25/06; B29D35/0036; B29D35/0054; B29D35/0063; B29D35/0072; B29D35/0081; B29K; B29K2021/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
THE METHOD FO MANUFACTURING FOOTWEAR WHICH INCLUDES THE STEPS OF PLACING A SHOE UPPER AND A PRESSURE MOLDABLE ELASTOMERIC MATERIAL INCLUDING A BLOWING AGENT IN A MOLD, CLOSING THE MOLD, APPLYING PRESSURE TO THE ELASTOMERIC MATERIAL IN THE MOLD TO MOLD THE SAME TO THE SHOE UPPER, THEREAFTER ENLARGING THE MOLD AND THEREBY REDUCING THE PRESSURE ON THE ELASTOMERIC MATERIAL TO PERMIT THE REMAINING PORTION OF THE MATERIAL TO EXPAND IN THE MOLD TO FORM AN INNER POROUS MASS, MAINTAINING THE ENLARGMENT OF THE MOLD UNTIL THE MATERIAL IS CURED, AND THEREAFTER REMOVING THE FOOTWEAR FROM TE MOLD.
Claim 2
Independent Claim
98 words
THE METHOD FO MANUFACTURING FOOTWEAR WHICH INCLUDES THE STEPS OF PLACING A SHOE UPPER AND A PRESSURE MOLDABLE ELASTOMERIC MATERIAL INCLUDING A BLOWING AGENT IN A MOLD, CLOSING THE MOLD, APPLYING PRESSURE TO THE ELASTOMERIC MATERIAL IN THE MOLD TO MOLD THE SAME TO THE SHOE UPPER, THEREAFTER ENLARGING THE MOLD AND THEREBY REDUCING THE PRESSURE ON THE ELASTOMERIC MATERIAL TO PERMIT THE REMAINING PORTION OF THE MATERIAL TO EXPAND IN THE MOLD TO FORM AN INNER POROUS MASS, MAINTAINING THE ENLARGMENT OF THE MOLD UNTIL THE MATERIAL IS CURED, AND THEREAFTER REMOVING THE FOOTWEAR FROM TE MOLD.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-25 | 1971-12-25 | 1972-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-25 | 1975-12-25 | 1976-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-25 | 1979-12-25 | 1980-06-25 | $7700.00 | Window Closed / Lapsed |