US2785441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming an elastomeric substitute for chamois leather
Assignee: Commonwealth Engineering Company of Ohio
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Filing: 1952-07-11
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Granted: 1957-03-19
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Expires: 1972-07-11
Abstract
No abstract record available.
Inventors
- 👤 Douglas C Blohm
- 👤 Marion D Ford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:15
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/56; B29C44/5627; D; D06; D06N; D06N3/00; D06N3/0002; D06N3/0015; D06N3/0025; D06N3/0027; D06N3/0029; B29C35/00; B29C55/00; B29K; B29K2021/00; Y; Y10; Y10S; Y10S264/00; Y10S264/70; Y10S264/73
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A METHOD OF PRODUCING A POROUS ELASTOMER PRODUCT HAVING A SQUEEGEE ACTION COMPRISING THE STEPS OF FOAMING A DISPERSION OF AN ELASTOMER TO PRODUCE CELLS, PARTIALLY CURING THE FOAMED ELASTOMER, TENSIVELY STRESSING THE ELASTOMER BEYOND THE ELASTIC LIMIT THEREOF TO REDUCE THE SIZE OF SAID CELLS, AND THEREAFTER WHILE THE ELASTOMER
Claim 2
Independent Claim
51 words
A METHOD OF PRODUCING A POROUS ELASTOMER PRODUCT HAVING A SQUEEGEE ACTION COMPRISING THE STEPS OF FOAMING A DISPERSION OF AN ELASTOMER TO PRODUCE CELLS, PARTIALLY CURING THE FOAMED ELASTOMER, TENSIVELY STRESSING THE ELASTOMER BEYOND THE ELASTIC LIMIT THEREOF TO REDUCE THE SIZE OF SAID CELLS, AND THEREAFTER WHILE THE ELASTOMER
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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) | 1960-03-18 | 1960-09-17 | 1961-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-18 | 1964-09-17 | 1965-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-18 | 1968-09-17 | 1969-03-19 | $7700.00 | Window Closed / Lapsed |