US2499774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesion of rubber to fibrous materials
Assignee: Callaway Mills Co
•
Filing: 1945-12-21
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Granted: 1950-03-07
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Expires: 1965-12-21
Abstract
No abstract record available.
Inventors
- 👤 Fred S Perkerson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:19
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C08J2321/00; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2762; Y10T442/2861; Y10T442/2869
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
THE METHOD OF IMPROVING THE ADHESION OF RUBBER TO FIBROUS TEXTILE MATERIALS WHICH COMPRISES APPLYING TO THE SAID MATERIAL A THIOSALICYLIC ACID COMPOUND CONTAINING A CARBOXYL GROUP IN ORTHO POSITION TO AN SH GROUP, APPLYING A VULCANIZABLE RUBBER COMPOUND TO THE TREATED FIBROUS MATERIAL AND VULCANIZING THE RUBBER COMPOUND.
Claim 2
Independent Claim
49 words
THE METHOD OF IMPROVING THE ADHESION OF RUBBER TO FIBROUS TEXTILE MATERIALS WHICH COMPRISES APPLYING TO THE SAID MATERIAL A THIOSALICYLIC ACID COMPOUND CONTAINING A CARBOXYL GROUP IN ORTHO POSITION TO AN SH GROUP, APPLYING A VULCANIZABLE RUBBER COMPOUND TO THE TREATED FIBROUS MATERIAL AND VULCANIZING THE RUBBER COMPOUND.
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-06 | 1953-09-05 | 1954-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-06 | 1957-09-05 | 1958-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-06 | 1961-09-05 | 1962-03-07 | $7700.00 | Window Closed / Lapsed |