US2698809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preserving plant and animal tissues
Assignee: —
•
Filing: —
•
Granted: 1955-01-04
•
Expires: 1972-01-04
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:29
CPC Classifications
A; A01; A01N; A01N1/00; A01N1/10; A01N3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A PROCESS FOR PRESERVING NATURALLY COLORED PLANT AND ANIMAL TISSUES, CONSISTING ESSENTIALLY, OF IMMERSING THE TISSUES IN A COLOR STABILIZING AND PRESERVING SOLUTION CONSISTING ESSENTIALLY OF A VOLATILE WATER-DISSOLVING MONOHYDRIC ALCOHOL AND THIOUREA, SAID SOLUTION BEING ADJUSTED TO A PH CORRESPONDING SUBSTANTIALLY TO THE PH OF THE LIQUID MEDIUM OF THE TISSUES IN WHICH THE NATURAL COLORING MATTER IS SUSPENDED, REMOVING THE TISSUES FROM THE SOLUTION AND PERMITTING THE VOLATILE CONSTITUENTS RETAINED IN THEM TO EVAPORATE, WHEREBY THE NATURAL COLORS OF THE TISSUES ARE STABILIZED AND THEIR PHYSICAL SHAPES ARE RETAINED, AND THEN ENVELOPING SAID TISSUES WITH A SUBSTANTIALLY TRANSPARENT MOISTURE-RESISTANT RESIN.
Claim 2
Dependent Claim
102 words
A PROCESS FOR PRESERVING NATURALLY COLORED PLANT AND ANIMAL TISSUES, CONSISTING ESSENTIALLY, OF IMMERSING THE TISSUES IN A COLOR STABILIZING AND PRESERVING SOLUTION CONSISTING ESSENTIALLY OF A VOLATILE WATER-DISSOLVING MONOHYDRIC ALCOHOL AND THIOUREA, SAID SOLUTION BEING ADJUSTED TO A PH CORRESPONDING SUBSTANTIALLY TO THE PH OF THE LIQUID MEDIUM OF THE TISSUES IN WHICH THE NATURAL COLORING MATTER IS SUSPENDED, REMOVING THE TISSUES FROM THE SOLUTION AND PERMITTING THE VOLATILE CONSTITUENTS RETAINED IN THEM TO EVAPORATE, WHEREBY THE NATURAL COLORS OF THE TISSUES ARE STABILIZED AND THEIR PHYSICAL SHAPES ARE RETAINED, AND THEN ENVELOPING SAID TISSUES WITH A SUBSTANTIALLY TRANSPARENT MOISTURE-RESISTANT RESIN.
References Cited (Backward Citations)
US2105688A
Cited
US2567929A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-03 | 1958-07-05 | 1959-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-03 | 1962-07-05 | 1963-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-03 | 1966-07-05 | 1967-01-04 | $7700.00 | Window Closed / Lapsed |