Patent US3619149A successfully refreshed from Google Patents.
US3619149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinding cloth and method for the preparation thereof
Assignee: Individual
•
Filing: 1969-11-18
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Granted: 1971-11-09
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Expires: 1989-11-18
Abstract
Abstract The present invention relates to a grinding cloth of excellent grinding properties and process for the preparation thereof. The novel grinding cloth comprises preparing fiber filaments in such a manner e.g. by compressing them as to have spaces between them, thereby forming a fiber base. The said base is fixed in a matrix by means of a synthetic resin adhesive containing grinding particles. Globular crystals are formed on said matrix by spraying a mixture of said synthetic adhesives containing grinding particles and having a higher surface tension than said matrix.
Inventors
- 👤 Noboru Kitazawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:56
CPC Classifications
B; B24; B24D; B24D11/00; B24D11/001; B24D11/005
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
11 words
The grinding and polishing cloth of the process of claim 1.
Claim 2
Dependent Claim
28 words
A process according to claim 1 wherein the globular crystals of step e are further fixed by dipping in the same mixture employed in step a and curing.
Claim 3
Dependent Claim
8 words
The grinding and polishing cloth of claim 3.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |