Patent US4818623A successfully refreshed from Google Patents.
US4818623A
Expired / Lapsed
US
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Slide glass
Assignee: Wakunaga Pharmaceutical Co Ltd
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Filing: 1986-11-28
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Granted: 1989-04-04
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Expires: 2006-11-28
Abstract
Abstract A slide glass comprising a slide glass structure having a glass surface with silicic acid groups and a lipophilic functional group introduced into at least a part of said silicic acid groups. By the lipophilic group thus introduced, peel-off of the cell specimen does not readily occur.
Inventors
- 👤 Toyoharu Hozumi
- 👤 Yoshihiro Ohshita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:21
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/34; C; C03; C03C; C03C17/00; C03C17/28; C03C17/30; Y; Y10; Y10T; Y10T428/00; Y10T428/31; Y10T428/315; Y10T428/31504; Y10T428/31551; Y10T428/31609; Y10T428/31612; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
59 words
A slide glass, comprising: a slide glass structure having a glass surface with silicic acid groups and a lipophilic functional group introduced into at least a part of said silicic acid groups by the reaction of a hydrocarbyl halosilane compound with said silicic acid group so that said surface has improved adhesiveness to a tissue specimen for microscopic examination.
Claim 2
Dependent Claim
59 words
A slide glass, comprising: a slide glass structure having a glass surface with silicic acid groups and a lipophilic functional group introduced into at least a part of said silicic acid groups by the reaction of a hydrocarbyl halosilane compound with said silicic acid group so that said surface has improved adhesiveness to a tissue specimen for microscopic examination.
Claim 3
Dependent Claim
16 words
The slide glass according to claim 1, wherein the lipophilic functional group is an alkyl group.
Claim 4
Dependent Claim
25 words
The slide glass according to claim 2, wherein the lipophilic functional group is introduced by the reaction between an alkyl halosilane and a substrate glass.
Claim 5
Dependent Claim
14 words
The slide glass according to claim 3, wherein the alkyl halosilane is dialkyl dichlorosilane.
Claim 6
Dependent Claim
81 words
A process for preparing a stained tissue specimen fixed on a slide glass for microscopic examination, which comprises: (1) providing a slide glass as claimed in claim 1; (2) providing a tissue specimen to be observed; (3) fixing the tissue specimen on the slide glass; (4) subjecting the tissue specimen fixed on the slide glass to a staining process; and (5) applying a cover glass on the thus stained tissue specimen on the slide glass to form a stained tissue specimen.
Claim 7
Dependent Claim
21 words
The process as claimed in claim 5, wherein the staining process comprises treating the cell sample in an aqueous staining solution.
Claim 8
Dependent Claim
57 words
A slide glass, comprising: a slide glass structure having a glass surface with silicic acid groups and a lipophilic functional group selected from the group consisting of alkyl groups and aryl groups introduced into at least a portion of said silicic acid groups so that said surface has improved adhesiveness to a tissue specimen for microscopic examination.
Claim 9
Dependent Claim
57 words
A slide glass, comprising: a slide glass structure having a glass surface with silicic acid groups and a lipophilic functional group selected from the group consisting of alkyl groups and aryl groups introduced into at least a portion of said silicic acid groups so that said surface has improved adhesiveness to a tissue specimen for microscopic examination.
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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) | 1992-04-03 | 1992-10-03 | 1993-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-03 | 1996-10-03 | 1997-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-03 | 2000-10-03 | 2001-04-04 | $7700.00 | Window Closed / Lapsed |