US2645618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clearing agents for histological tissue
Assignee: Technicon Chemical Co Inc
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Filing: 1950-12-06
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Granted: 1953-07-14
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Expires: 1970-12-06
Abstract
No abstract record available.
Inventors
- 👤 Jr Andres Ferrari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:41
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/28; G01N1/30
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
70 words
A CLEARING AGENT FOR USE IN THE PREPARATION OF HISTOLOGICAL TISSUE FOR MICROSCOPIC EXAMINATION CONSISTING ESSENTIALLY OF ABOUT 60% ETHYLENE DICHLORIDE, ABOUT 20% CARBON TETRACHLORIDE AND ABOUT 20% OF A CHLORINATED NAPHTHALENE LIQUID AT ATMOSPHERIC TEMPERATURE, HAVING A SPECIFIC GRAVITY AT 77* F. OF 1.19 TO 1.25 A VISCOSITY (SAYBOLT UNIVERSITY SECONDS AT 77* F.) OF 33 TO 37 AND A DISTILLATION RANGE (ASTM) OF 480* F. TO 590* F.
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) | 1956-07-13 | 1957-01-12 | 1957-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-13 | 1961-01-12 | 1961-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-13 | 1965-01-12 | 1965-07-14 | $7700.00 | Window Closed / Lapsed |