Patent US4199558A successfully refreshed from Google Patents.
US4199558A
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Tissue processing method
Assignee: Shandon Diagnostics Ltd
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Filing: 1978-04-03
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Granted: 1980-04-22
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Expires: 1998-04-03
Abstract
Abstract Histological and like tissue specimens are processed by suspending them successively in the condensing vapors of a dehydrating fluid and a clarifying fluid and permeating the tissue specimens with the respective condensed fluid.
Inventors
- 👤 Kenneth J. Henderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:22
CPC Classifications
A; A01; A01N; A01N1/00; A01N3/00; G; G01; G01N; G01N1/00; G01N1/28; G01N1/30; G01N1/31; G01N2001/315
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
55 words
A method of processing a tissue specimen, comprising the steps of suspending the specimen in condensing vapours of a volatile dehydrating agent, condensing the vapours on the specimen, and permitting the condensed vapours of the dehydrating agent to penetrate throughout the specimen and to be absorbed thereby until the moisture therein has been completely displaced.
Claim 2
Independent Claim
55 words
A method of processing a tissue specimen, comprising the steps of suspending the specimen in condensing vapours of a volatile dehydrating agent, condensing the vapours on the specimen, and permitting the condensed vapours of the dehydrating agent to penetrate throughout the specimen and to be absorbed thereby until the moisture therein has been completely displaced.
Claim 3
Dependent Claim
41 words
The method of claim 1, wherein the dehydrated specimen is suspended in condensing vapours of a clearing agent and the condensed vapours of the clearing agent are permitted to penetrate through the dehydrated specimen until the dehydrating agent has been displaced.
Claim 4
Dependent Claim
33 words
The method of claim 2, wherein the specimen is successively suspended in the vapours of the dehydrating agent and of the clearing agent boiling at the same temperature to produce the respective vapours.
Claim 5
Dependent Claim
29 words
The method of claim 1, comprising the further step of adjusting the atmospheric pressure wherein the specimen is suspended to cause the agent to vapourize at a selected temperature.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-04-22 | 1983-10-22 | 1984-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-22 | 1987-10-22 | 1988-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-22 | 1991-10-22 | 1992-04-22 | $7700.00 | Window Closed / Lapsed |