US2581296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treated fur fibers
Assignee: Hat Corp of America
•
Filing: 1947-08-04
•
Granted: 1952-01-01
•
Expires: 1967-08-04
Abstract
No abstract record available.
Inventors
- 👤 George M Rickus
- 👤 Stanley G Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:39
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/02; D06P3/04; D06P3/30; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31942
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
110 words
IN THE METHOD OF MAKING A DYED FUR FELT HAT BODY, THE STEPS OF MIXING INFERIOR FUR AND ENTIRE; DEPOSITING THE MIXTURE ON A CONE TO FORM A BAT; HARDENING THE BAT OF THE MIXED FIBERS; APPLYING TO THE BAT AFTER HARDENING AND BEFORE COMPLETING THE FELTING OF THE FIBERS A REACTION MIXTURE INCLUDING MELAMINE AND FORMALDEHYDE AND DRYING SAID FIBERS TO FORM A SURFACE OF WATER INSOLUBLE MELAMINE-FORMALDEHYDE REACTION PRODUCT ON THE FIBERS IN THE BAT TO IMPROVE BOTH THE DYEING AND FELTING PROPERTIES THEREOF; COMPLETING THE FELTING OF THE FIBERS AND SHRINKING OF THE BAT INTO A HAT BODY; AND DYEING THE FELTED FABRIC WITH AN ACID DYE.
References Cited (Backward Citations)
US1713641A
Cited
US2225267A
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US2248696A
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US2329622A
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USRE22566E
Cited
US2309907A
Cited
US2355598A
Cited
US2429476A
Cited
US2429073A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |