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US2820716A
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Method of forming nonwoven fabric
Assignee: Chicopee Manufacturing Corp
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Filing: 1954-04-01
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Granted: 1958-01-21
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Expires: 1974-04-01
Abstract
No abstract record available.
Inventors
- 👤 Harmon Carlyle
- 👤 Charles H Plummer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:11
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/60; D04H1/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
THE METHOD OF FORMING A NONWOVEN FABRIC FROM A LOOSELY ASSEMBLED FIBROUS WEB, WHICH COMPRISES DISTRIBUTING DRY CHARGED PARTICLES OF AN ADHESIVE MATERIEAL THROUGHOUT THE WEB IN A PREDETERMINED PATTERN BY MEANS OF ELECTRIC LINES OF FORCE, SOFTENING THE PARTICLES IN THE WEB TO AN ADHESIVE STATE, AND HARDENING SAID PARTICLES IN ADHESIVE CONTACT WITH FIBERS IN THE WEB TO BOND THEM TOGETHER AND FORM A FABRIC.
Claim 2
Independent Claim
67 words
THE METHOD OF FORMING A NONWOVEN FABRIC FROM A LOOSELY ASSEMBLED FIBROUS WEB, WHICH COMPRISES DISTRIBUTING DRY CHARGED PARTICLES OF AN ADHESIVE MATERIEAL THROUGHOUT THE WEB IN A PREDETERMINED PATTERN BY MEANS OF ELECTRIC LINES OF FORCE, SOFTENING THE PARTICLES IN THE WEB TO AN ADHESIVE STATE, AND HARDENING SAID PARTICLES IN ADHESIVE CONTACT WITH FIBERS IN THE WEB TO BOND THEM TOGETHER AND FORM A FABRIC.
References Cited (Backward Citations)
US1461337A
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US2372433A
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US2428591A
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US2550686A
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US2669757A
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US2603575A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |