US3553311A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing biological stains and reagents for biochemical determinations using ultrasonic energy
Assignee: Individual
•
Filing: 1965-06-30
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Granted: 1971-01-05
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Expires: 1985-06-30
Abstract
Abstract A METHOD FOR THE MANUFACTURE OF STAINS OR OTHER MATERIALS OF THE TYPE EMPLOYED TO TREAT BIOLOGICAL SPECIMENS IS DESCRIBED. ULTRASONIC ENERGY, AT A POWER LEVEL SUFFICIENT TO INDUCE CAVITATION, IS APPLIED TO A MECHANICALLY MIXED COMBINATION OF A SOLUTE IN A LIQUID SOLVENT. A REDUCTION IN MANUFACTURING TIME OF APPROXIMATELY 300:1 IS OBTAINED IN MAKING WRIGHT''S STAIN SOLUTION AND THE RESULTING PRODUCT PENETRATES THE SPECIMAN APPROXIMATELY 60 TIMES FASTER THAN WRIGHT''S STAIN PRODUCED BY CONVENTIONAL METHODS. VARIOUS TYPES OF ULTRA-FINE DISPERSIONS WHICH MAY BE PRODUCED BY THE METHOD OF THE INVENTION ARE DESCRIBED.
Inventors
- 👤 Anthony William Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:11
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/52; A; A61; A61K; A61K41/00; A61K41/0028; A61K41/0038
Claims Analysis
Total Claims: 0
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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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |