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Patent US2500573A successfully refreshed from Google Patents.
US2500573A
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Method of making roll coverings
Assignee: Dayton Rubber Co
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Filing: 1947-01-18
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Granted: 1950-03-14
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Expires: 1967-01-18
Abstract
No abstract record available.
Inventors
- 👤 Rockoff Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:24
CPC Classifications
B; B41; B41N; B41N7/00; B41N7/04; B29; B29D; B29D99/00; B29D99/0032; B29D99/0035; B29L; B29L2031/00; B29L2031/32; B29L2031/324; B41N2207/00; B41N2207/02; B41N2207/04; B41N2207/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A METHOD OF MANUFACTURING ROLL COVERINGS COMPRISING THE STEPS OF (A) APPLYING A BULK LAYER OF RUBBER MATERIAL TO A MANDREL; (B) VULCANIZING SAID LAYER; (C) PLACING A RELATIVELY THIN SPONGETEXTURE FORMING RUBBER COMPOSITION THEREOVER AS A SURFACE LAYER; AND (D) CURING THE UNIT THUS FORMED.
Claim 2
Independent Claim
46 words
A METHOD OF MANUFACTURING ROLL COVERINGS COMPRISING THE STEPS OF (A) APPLYING A BULK LAYER OF RUBBER MATERIAL TO A MANDREL; (B) VULCANIZING SAID LAYER; (C) PLACING A RELATIVELY THIN SPONGETEXTURE FORMING RUBBER COMPOSITION THEREOVER AS A SURFACE LAYER; AND (D) CURING THE UNIT THUS FORMED.
References Cited (Backward Citations)
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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) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |