US3029450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of shoe end stiffening employing solvent activatable stiffener ply with anti-stain solvent activating solution
Assignee: BB Chemical Co
•
Filing: 1958-08-07
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Granted: 1962-04-17
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Expires: 1978-08-07
Abstract
No abstract record available.
Inventors
- 👤 Stanlcy M Griswold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:43
CPC Classifications
A; A43; A43B; A43B23/00; A43B23/08; A43B23/16; C; C09; C09J; C09J157/00; C08; C08L; C08L2666/00; C08L2666/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
THE METHOD OF STIFFENING THE HEEL END PORTION OF A SHOE COMPRISING THE STEPS OF ASSEMBLING TO A QUATER A POROUS PLY OF SHEET MATERIAL IMPREGNATED WITH A STIFFENING AGENT IN DISCONTINUOUS FORM CAPABLE OF BEING COALSECED BY TREATMENT WITH AN ORGANIC ALIPJATIC SOLVENT AND AFTER DRYING OUT, RENDERING THE MATERIAL STIFF, APPLYING TO A SURFACE OF SAID PLY A LIQUID COMPOSITION COMPRISING ONE PART BY WEIGHT OF POLYVINYL ACETATE RESIN AQUEOUS EMULSION OF APPROXIMATELY 25-60% SOLIDS CONTENT AND FROM ONE TO THREE PARTS BY WEIGHT OF A READILY VOLATILE ORGANIC ALIPHATIC SOLVENT CAPABLE OF COALESCING SAID STIFFENING AGENT AND CAPABLE OF FORMING WITH SAID EMULSION A STABLE
Claim 2
Independent Claim
108 words
THE METHOD OF STIFFENING THE HEEL END PORTION OF A SHOE COMPRISING THE STEPS OF ASSEMBLING TO A QUATER A POROUS PLY OF SHEET MATERIAL IMPREGNATED WITH A STIFFENING AGENT IN DISCONTINUOUS FORM CAPABLE OF BEING COALSECED BY TREATMENT WITH AN ORGANIC ALIPJATIC SOLVENT AND AFTER DRYING OUT, RENDERING THE MATERIAL STIFF, APPLYING TO A SURFACE OF SAID PLY A LIQUID COMPOSITION COMPRISING ONE PART BY WEIGHT OF POLYVINYL ACETATE RESIN AQUEOUS EMULSION OF APPROXIMATELY 25-60% SOLIDS CONTENT AND FROM ONE TO THREE PARTS BY WEIGHT OF A READILY VOLATILE ORGANIC ALIPHATIC SOLVENT CAPABLE OF COALESCING SAID STIFFENING AGENT AND CAPABLE OF FORMING WITH SAID EMULSION A STABLE
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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) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |