US4060440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of specimen preparation
Assignee: Jung R AG Fabrik fur Prazisionsapparate
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Filing: 1977-06-06
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Granted: 1977-11-29
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Expires: 1997-06-06
Abstract
Abstract The invention pertains to method and apparatus for specimen preparation, in conjunction with which at least one specimen surface is produced on a test piece embedded, if required, in a casting-resin mounting medium through chip or slice removal of material and wherein the examined specimen surface is milled; especially, a method for the preparation of hard objects, and/or objects exhibiting differential hardness over the specimen surface, for electron scan microscopic and X-Ray studies. The invention further includes apparatus for preparing a specimen for examination which includes a milling head.
Inventors
- 👤 Werner Behme
- 👤 Manfred Berleth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:53
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/28; G01N1/32; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/303752; Y10T409/303808
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
A method of preparing a thin specimen section in a microtome having a rotary milling cutter for microscopic studies in a transmitted light microscope comprising mounting a specimen to be prepared for examination on the slide means of said microtome, advancing said specimen relatively toward said rotary milling cutter of said microtome in a plane parallel to the plane of said rotary milling cutter of said microtome, removing a predetermined thickness of material of said specimen by cutting by said rotary milling cutter thereby to achieve a mirror-smooth and roughness-free, flatly-reduced specimen surface, removing said specimen from said slide means, affixing said reduced surface to an examination slide holder, further mounting said specimen on said examination slide holder to said slide means of said microtome, advancing said specimen generally horizontally relatively toward said rotary milling cutter of said microtome, removing a predetermined thickness of material of said specimen by cutting by said rotary milling cutter thereby to achieve a specimen slide having a layer thickness which accommodates microscopic examination in transmitted light.
Claim 2
Independent Claim
172 words
A method of preparing a thin specimen section in a microtome having a rotary milling cutter for microscopic studies in a transmitted light microscope comprising mounting a specimen to be prepared for examination on the slide means of said microtome, advancing said specimen relatively toward said rotary milling cutter of said microtome in a plane parallel to the plane of said rotary milling cutter of said microtome, removing a predetermined thickness of material of said specimen by cutting by said rotary milling cutter thereby to achieve a mirror-smooth and roughness-free, flatly-reduced specimen surface, removing said specimen from said slide means, affixing said reduced surface to an examination slide holder, further mounting said specimen on said examination slide holder to said slide means of said microtome, advancing said specimen generally horizontally relatively toward said rotary milling cutter of said microtome, removing a predetermined thickness of material of said specimen by cutting by said rotary milling cutter thereby to achieve a specimen slide having a layer thickness which accommodates microscopic examination in transmitted light.
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) | 1980-11-28 | 1981-05-30 | 1981-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-28 | 1985-05-30 | 1985-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-28 | 1989-05-30 | 1989-11-29 | $7700.00 | Window Closed / Lapsed |