Patent JPS582273A successfully refreshed from Google Patents.
Patent US3254357A successfully refreshed from Google Patents.
US3254357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined scrubbing and polishing pad
Assignee: Unifrax I LLC
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Filing: 1961-08-10
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Granted: 1966-06-07
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Expires: 1981-08-10
Abstract
No abstract record available.
Inventors
- 👤 Lawrence D Caul
- 👤 Jr Joseph R O'neil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:55
CPC Classifications
A; A47; A47L; A47L13/00; A47L13/02; A47L13/06; A47L13/07; A47L13/10; A47L13/16; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T428/31504; Y10T428/31511; Y10T442/00; Y10T442/20; Y10T442/2762
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A CLEANING PAD WHICH CONSISTS OF AN OPEN, POROUS FELT OR RANDOMLY ARRANGED, CURLED ANIMAL HAIR, THE INDIVIDUAL HAIR FIBERS OF SAID FELT BEING BONDED THROUGHOUT SAID PAD AT THEIR POINTS OF INTERSECTION BY A CURED ELASTOMER, SAID PAD HAVING A STIFF, SCRUBBING SIDE IN WHICH THE INDIVIDUAL HAIR FIBERS ARE COATED WITH A THERMOSET RESIN WHICH ALSO COVERS SAID ELASTOMER AND PROVIDES A FURTHER BOND FOR SAID FIBERS AT THEIR POINTS OF INTERSECTION, SAID THERMOSET RESIN EXTENDING THROUGH ONLY A PORTION OF THE THICKNESS OF SAID FELT, AND A FLEXIBLE SIDE FREE FROM SAID RESIN FORMED BY THE REMAINING PORTION OF THE THICKNESS OF SAID FELT, SAID PAD BEING FREE FROM ABRASIVE THROUGHOUT ITS THICKNESS.
Claim 2
Dependent Claim
116 words
A CLEANING PAD WHICH CONSISTS OF AN OPEN, POROUS FELT OR RANDOMLY ARRANGED, CURLED ANIMAL HAIR, THE INDIVIDUAL HAIR FIBERS OF SAID FELT BEING BONDED THROUGHOUT SAID PAD AT THEIR POINTS OF INTERSECTION BY A CURED ELASTOMER, SAID PAD HAVING A STIFF, SCRUBBING SIDE IN WHICH THE INDIVIDUAL HAIR FIBERS ARE COATED WITH A THERMOSET RESIN WHICH ALSO COVERS SAID ELASTOMER AND PROVIDES A FURTHER BOND FOR SAID FIBERS AT THEIR POINTS OF INTERSECTION, SAID THERMOSET RESIN EXTENDING THROUGH ONLY A PORTION OF THE THICKNESS OF SAID FELT, AND A FLEXIBLE SIDE FREE FROM SAID RESIN FORMED BY THE REMAINING PORTION OF THE THICKNESS OF SAID FELT, SAID PAD BEING FREE FROM ABRASIVE THROUGHOUT ITS THICKNESS.
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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) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |