US4162899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polishing foil or polishing plate
Assignee: Rio Tinto Switzerland AG
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Filing: 1977-08-15
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Granted: 1979-07-31
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Expires: 1997-08-15
Abstract
Abstract A polishing foil or plate is made up of a metallic base provided with a non-metallic layer which covers the polishing surface, acts as a polishing substrate and is intimately bonded to the metallic base. Used together with polishing substances, the polishing foil or plate prepares material such as metals, minerals and ceramics for microscopic examination and does so employing the minimum of polishing substance and with the minimum of rounding at the edge of the samples.
Inventors
- 👤 Sandor Molnar
- 👤 Wolfhart Rieger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:42
CPC Classifications
B; B24; B24D; B24D11/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
96 words
A polishing foil or polishing plate which is used together with a polishing substance for preparing the surfaces of materials, in particular for polishing metallographic, petrographic and ceramographic samples which comprises a first layer of a metallic base having a polishing surface provided with a second non-metallic layer selected from the group consisting of an inorganic oxide, inorganic phosphate, inorganic chromate, inorganic molybdate and inorganic oxalate layers which covers the polishing surface, acts as a polishing substrate and is intimately and directly bonded to the said metallic base without the presence of an intermediate layer therebetween.
Claim 2
Dependent Claim
96 words
A polishing foil or polishing plate which is used together with a polishing substance for preparing the surfaces of materials, in particular for polishing metallographic, petrographic and ceramographic samples which comprises a first layer of a metallic base having a polishing surface provided with a second non-metallic layer selected from the group consisting of an inorganic oxide, inorganic phosphate, inorganic chromate, inorganic molybdate and inorganic oxalate layers which covers the polishing surface, acts as a polishing substrate and is intimately and directly bonded to the said metallic base without the presence of an intermediate layer therebetween.
Claim 3
Dependent Claim
38 words
A polishing plate according to claim 1 in which the metallic base is in the form of a foil adhesively bonded to a third layer of a plastic foil support base on the side opposite said second layer.
Claim 4
Dependent Claim
14 words
A polishing plate according to claim 1 in which the metallic base is aluminum.
Claim 5
Dependent Claim
22 words
A polishing plate according to claim 3 in which the non-metallic layer is a natural metal oxide layer on said first layer.
Claim 6
Dependent Claim
24 words
A polishing plate according to claim 1 in which the metallic base is a metal selected from the group consisting of zinc and steel.
Claim 7
Dependent Claim
16 words
A polishing plate according to claim 3 in which the non-metallic layer is a phosphate layer.
Claim 8
Dependent Claim
16 words
A polishing plate according to claim 3 in which the non-metallic layer is a chromate layer.
Claim 9
Dependent Claim
16 words
A polishing plate according to claim 3 in which the non-metallic layer is an oxalate layer.
Claim 10
Dependent Claim
16 words
A polishing plate according to claim 3 in which the non-metallic layer is a molybdate layer.
References Cited (Backward Citations)
US2595733A
Cited
US2937934A
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US3249410A
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US3284178A
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US3214253A
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US3343932A
Cited
US3398442A
Cited
US3860400A
Cited
US3985521A
Cited
US4063909A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-07-30 | 1983-01-29 | 1983-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-07-30 | 1987-01-29 | 1987-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-07-30 | 1991-01-29 | 1991-07-31 | $7700.00 | Window Closed / Lapsed |