US2632210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permeable leather substitutes and methods of making
Assignee: United Shoe Machinery Corp
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Filing: 1950-10-24
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Granted: 1953-03-24
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Expires: 1970-10-24
Abstract
No abstract record available.
Inventors
- 👤 Arthur R Olson
- 👤 Edward B Mcmillan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:22
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/06; D; D06; D06N; D06N3/00; D06N3/0043; D06N3/005; D06N3/04; D06N3/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
THE METOD OF FORMING FLEXIBLE, PERMEABLE SHEET MATERIAL WHICH COMPRISES INTIMATELY MIXING 100 PARTS BY WEIGHT OF A RUBBER, FROM 50 TO 600 PARTS BY WEIGHT OF A COMPATIBLE, HARD, RESINOUS MATERIAL, AND FROM 75 TO 100 PARTS BY WEIGHT OF A FINELY DIVIDED SALT FROM THE GROUP CONSISTING OF AMMONIUM SULFAMATE, AMMONIUM FORMATE AND AMMONIUM ACETATE, SAID BEING DECOMPOSABLE BY HEAT WITH EVOLUTION OF GAS AND FORMATION OF A WATER SOLUBLE ACIDIC RESIDUE, FORMING THE MIXTURE INTO A SHEET, HEATING THE SHEET TO CASE THE SALT TO DECOMPOSE AND GIVE OFF GAS TO EXPAND THE MATERIAL, AND LEACHING OUT THE SOLUBLE RESIDUE.
Claim 2
Dependent Claim
103 words
THE METOD OF FORMING FLEXIBLE, PERMEABLE SHEET MATERIAL WHICH COMPRISES INTIMATELY MIXING 100 PARTS BY WEIGHT OF A RUBBER, FROM 50 TO 600 PARTS BY WEIGHT OF A COMPATIBLE, HARD, RESINOUS MATERIAL, AND FROM 75 TO 100 PARTS BY WEIGHT OF A FINELY DIVIDED SALT FROM THE GROUP CONSISTING OF AMMONIUM SULFAMATE, AMMONIUM FORMATE AND AMMONIUM ACETATE, SAID BEING DECOMPOSABLE BY HEAT WITH EVOLUTION OF GAS AND FORMATION OF A WATER SOLUBLE ACIDIC RESIDUE, FORMING THE MIXTURE INTO A SHEET, HEATING THE SHEET TO CASE THE SALT TO DECOMPOSE AND GIVE OFF GAS TO EXPAND THE MATERIAL, AND LEACHING OUT THE SOLUBLE RESIDUE.
References Cited (Backward Citations)
US2383110A
Cited
US2459439A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-23 | 1956-09-22 | 1957-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-23 | 1960-09-22 | 1961-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-23 | 1964-09-22 | 1965-03-24 | $7700.00 | Window Closed / Lapsed |