US2923598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming filaments embodying polyurethane resins
Assignee: PPG Industries Inc
•
Filing: 1954-06-30
•
Granted: 1960-02-02
•
Expires: 1974-06-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Joseph J Reis
- 👤 Terry Samuel Matthew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:01
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/06; D01F; D01F6/00; D01F6/58; D01F6/70; Y; Y10; Y10S; Y10S264/00; Y10S264/77
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
IN THE METHOD OF FORMING TOUGH, INSOLUBLE FILAMENTS WHICH ARE ADAPTED TO BE CUT INTO SECTIONS AND USED AS BRUSH BRISTLES, THE STEPS OF FORMING IN A SOLVENT SELECTED FROM THE GROUP CONSISTING OF:
Claim 2
Dependent Claim
34 words
IN THE METHOD OF FORMING TOUGH, INSOLUBLE FILAMENTS WHICH ARE ADAPTED TO BE CUT INTO SECTIONS AND USED AS BRUSH BRISTLES, THE STEPS OF FORMING IN A SOLVENT SELECTED FROM THE GROUP CONSISTING OF:
References Cited (Backward Citations)
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US2277083A
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US2320704A
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US2327872A
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US2341823A
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US2408718A
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US2512726A
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US2605509A
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US2712490A
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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) | 1963-02-01 | 1963-08-03 | 1964-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-01 | 1967-08-03 | 1968-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-01 | 1971-08-03 | 1972-02-02 | $7700.00 | Window Closed / Lapsed |