Patent US3256545A successfully refreshed from Google Patents.
US3256545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brush fibres and brush construction employing same
Assignee: Individual
•
Filing: 1963-12-16
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Granted: 1966-06-21
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Expires: 1983-12-16
Abstract
No abstract record available.
Inventors
- 👤 Jr John C Lewis
- 👤 Shaw Gilbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:52
CPC Classifications
A; A46; A46D; A46D1/00; A46D1/02; A46D1/0238; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2973; Y10T428/2976; Y10T428/31504; Y10T428/31725
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A THERMOPLASTIC BRUSH FIBRE OF IMPROVED ABRASION RESISTANT CHARACTERISTICS, SAID FIBRE HAVING DIFFERENT CROSSSECTIONAL AREAS OF MATERIAL ALONG ITS LENGTH COMPRISING AN ELONGATED ABRASION RESISTANT ZONE AN ELONGATED INTEGRAL STEM ZONE OF LESSER CROSS-SECTIONAL AREA THAN THE ABRASION RESISTANT ZONE, SAID ABRASION RESISTANT ZONE HAVING A UNIFORM CROSS-SECTIONAL AREA OF MATERIAL ALONG ITS LENGTH, THE AVERAGE WEIGHT PER UNIT LENGTH OF THE ABRASION RESISTANT ZONE BEING AT LEAST 10% GREATER THAN THE AVERAGE WEIGHT PER UNIT LENGTH IN THE STEM ZONE.
Claim 2
Dependent Claim
81 words
A THERMOPLASTIC BRUSH FIBRE OF IMPROVED ABRASION RESISTANT CHARACTERISTICS, SAID FIBRE HAVING DIFFERENT CROSSSECTIONAL AREAS OF MATERIAL ALONG ITS LENGTH COMPRISING AN ELONGATED ABRASION RESISTANT ZONE AN ELONGATED INTEGRAL STEM ZONE OF LESSER CROSS-SECTIONAL AREA THAN THE ABRASION RESISTANT ZONE, SAID ABRASION RESISTANT ZONE HAVING A UNIFORM CROSS-SECTIONAL AREA OF MATERIAL ALONG ITS LENGTH, THE AVERAGE WEIGHT PER UNIT LENGTH OF THE ABRASION RESISTANT ZONE BEING AT LEAST 10% GREATER THAN THE AVERAGE WEIGHT PER UNIT LENGTH IN THE STEM ZONE.
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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) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |