Patent US1836890A successfully refreshed from Google Patents.
Patent US4241469A successfully refreshed from Google Patents.
US4241469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet of polishing fibers comprising fibrous layers bonded with particles of thermoplastic material
Assignee: RUBEN JOSE FERNANDINO
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Filing: 1978-10-10
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Granted: 1980-12-30
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Expires: 1998-10-10
Abstract
Abstract A sheet of polishing fibers with a double polishing face used for the purpose of cleaning or polishing all kinds of metal objects, wood or other materials. It can be used with water, soap and water and also dry without becoming clogged because it allows dirt and dust to pass through it when in use. The sheet of polishing fibers is composed of two layers of polishing fibers adhered in a very particular way by means of particles of thermo-plastic material.
Inventors
- 👤 Luis R. C. Perazzo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:31
CPC Classifications
B; B24; B24D; B24D15/00; B24D15/04; A; A47; A47L; A47L17/00; A47L17/04; A47L17/08; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23986; Y10T428/24; Y10T428/24802; Y10T428/24826; Y10T428/24851; Y10T442/00; Y10T442/50; Y10T442/59
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
82 words
A sheet of polishing fibers which consist of two superposed thin layers of polishing fibers with opposed interior surfaces of the layers adhered to one another by means of particles of thermoplastic material which bond fibers from the interior surface of one layer to fibers from the interior surface of the other layer only at points of fiber contact, the particles of thermoplastic material functioning to keep the fibers in their proper place by forming a bidimensional net with the bonded fibers.
Claim 2
Dependent Claim
82 words
A sheet of polishing fibers which consist of two superposed thin layers of polishing fibers with opposed interior surfaces of the layers adhered to one another by means of particles of thermoplastic material which bond fibers from the interior surface of one layer to fibers from the interior surface of the other layer only at points of fiber contact, the particles of thermoplastic material functioning to keep the fibers in their proper place by forming a bidimensional net with the bonded fibers.
Claim 3
Dependent Claim
57 words
A method of manufacturing the sheet of polishing fibers of claim 1 which comprises interposing a film layer of thermoplastic material, of such thickness that it forms the thermoplastic particles of the sheet of claim 1 under heating conditions between the superposed thin layers of polishing fibers and thereafter subjecting the superposed layers to heat and pressure.
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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) | 1983-12-30 | 1984-06-30 | 1984-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-30 | 1988-06-30 | 1988-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-30 | 1992-06-30 | 1992-12-30 | $7700.00 | Window Closed / Lapsed |