Patent US3648318A successfully refreshed from Google Patents.
US3648318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning-brush
Assignee: Nippon Seal Co Ltd
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Filing: 1969-04-29
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Granted: 1972-03-14
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Expires: 1989-04-29
Abstract
Abstract The brush surface of the disclosed cleaning-brush is comprised of short bristles implanted so as to slant in one direction and a holding means for securing the brush surface.
Inventors
- 👤 Teruya Tsuruzawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:34
CPC Classifications
A; A46; A46B; A46B7/00; A47; A47L; A47L25/00; A47L25/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
66 words
A cleaning brush comprising a brush surface with bristles; a top layer and a bottom layer of synthetic leather, said bottom layer bonded to the said brush surface, the said top layer bonded to the perimeter of said bottom layer; the bristles of the said brush surface being 1-7 mm. in length and the inclined angle of said bristles to the brush surface being from 3*-80*.
Claim 2
Dependent Claim
66 words
A cleaning brush comprising a brush surface with bristles; a top layer and a bottom layer of synthetic leather, said bottom layer bonded to the said brush surface, the said top layer bonded to the perimeter of said bottom layer; the bristles of the said brush surface being 1-7 mm. in length and the inclined angle of said bristles to the brush surface being from 3*-80*.
Claim 3
Dependent Claim
107 words
A cleaning brush comprising a brush surface with bristles; a top layer and a bottom layer of synthetic leather, said bottom layer bonded to the said brush surface, the said top layer bonded to the perimeter of said bottom layer; the bristles of the said brush surface being 1-7 mm. in length and the inclined angle of said bristles to the brush surface being from 3*-80*; said top layer forming two sheaths, one of said sheaths being adapted to receive a comb and the other of said sheaths to receive a writing instrument, and a small sheath provided on said comb-receiving sheath to hold a nail file.
Claim 4
Dependent Claim
107 words
A cleaning brush comprising a brush surface with bristles; a top layer and a bottom layer of synthetic leather, said bottom layer bonded to the said brush surface, the said top layer bonded to the perimeter of said bottom layer; the bristles of the said brush surface being 1-7 mm. in length and the inclined angle of said bristles to the brush surface being from 3*-80*; said top layer forming two sheaths, one of said sheaths being adapted to receive a comb and the other of said sheaths to receive a writing instrument, and a small sheath provided on said comb-receiving sheath to hold a nail file.
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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) | 1975-03-14 | 1975-09-13 | 1976-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-14 | 1979-09-13 | 1980-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-14 | 1983-09-13 | 1984-03-14 | $7700.00 | Window Closed / Lapsed |