US2686733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of pile fabrics
Assignee: Sumitomo Rubber USA LLC
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Filing: 1951-07-17
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Granted: 1954-08-17
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Expires: 1971-07-17
Abstract
No abstract record available.
Inventors
- 👤 Burridge Kenneth George
- 👤 Hirst Henry Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:06
CPC Classifications
D; D04; D04H; D04H11/00; B; B05; B05C; B05C19/00; B05C19/001; B05C19/002
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
71 words
A METHOD FOR THE ELECTROSTATIC PRODUCTION OF PILE FABRICS WHICH COMPRISES BRINGING A SUPPLY OF PILE FIBERS BELOW A SHEET OF BACKING MATERIAL ADHESIVELY COATED ON ITS UNDER SURFACE, ELECTROSTATICALLY PROJECTING SAID PILE FIBERS UPWARDLY TO SAID ADHESIVELY COATED SIDE OF SAID BACKING SHEET BY AN ELECTROSTATIC FIELD OF UNVARYING STRENGTH AND CONTINUOUSLY VIBRATING SAID BACKING SHEET VERTICALLY WHILE SAID PILE FIBERS ARE PROJECTED TO SAID ADHESIVELY COATED UNDER SURFACE THEREOF.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-16 | 1958-02-15 | 1958-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-16 | 1962-02-15 | 1962-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-16 | 1966-02-15 | 1966-08-17 | $7700.00 | Window Closed / Lapsed |