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Patent US3624197A successfully refreshed from Google Patents.
US3624197A
Expired / Lapsed
US
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Water-soluble tissue infiltrating and embedding compositions
Assignee: Individual
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Filing: 1969-09-04
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Granted: 1971-11-30
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Expires: 1989-09-04
Abstract
Abstract Water-soluble tissue infiltrating and embedding compositions facilitating rapid preparation of tissue sections biopsic study comprising 50 to 60 percent of polyethylene glycol having a molecular weight of about 3700 and somewhat less than 50 percent of a mixture of nonionic surface active agents having varying consistency ranging from solid to semisolid and liquid consistencies together with small amounts of water soluble and water-insoluble waxes, whereby the hardness of the polyethylene glycol is reduced and hygroscopicity maintains substantially constant during seasonal variations of ambient temperature and humidity.
Inventors
- 👤 Philip Schain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:21
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/28; G01N1/36
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
71 words
The water-soluble tissue infiltrating and embedding composition of claim 1 wherein component (b) is a nonyl phenol ethylene oxide condensate containing about 40 mols of ethylene oxide per mol of nonyl phenol, component (e) is a nonyl phenol ethylene oxide condensate having about 4 to 7 mols of ethylene oxide per mol of nonyl phenol, and component (g) is selected from the group consisting of carnauba wax, beeswax, and mixtures thereof.
References Cited (Backward Citations)
US3257279A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |