US2613155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Viscosity-stable casein adhesives
Assignee: NAT STARCH PRODUCTS Inc
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Filing: 1949-05-26
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Granted: 1952-10-07
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Expires: 1969-05-26
Abstract
No abstract record available.
Inventors
- 👤 White Thomas Aubrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:35
CPC Classifications
C; C09; C09J; C09J189/00; C09J189/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A VISCOSITY-STABLE CASEIN ADHESIVE COMPRISING CASEIN AS THE ADHESIVE COMPONENT, A CASEIN COLUBILIZER OF WHICH THE PRIME AND NECESSARY SOLUBILIZING AGENT IS SELECTED FROM THE GROUP CONSISTING OF UREA AND AMMONIUM THIOCYANATE, THE UREA AND AMMONIUM THIOCYANATE, SINGLY OR IN COMBINATION, BEING PRESENT IN THE PROPORTION OF AT LEAST 50%, BASED ON THE DRY WEIGHT OF THE CASEIN, SUCH ADHESIVE WHEN MIXED WITH WATER PRODUCING AN ADHESIVE PASTE WHICH IS SUBSTANTIALLY STABLE AND HAS A WORKING LIFE OF AT LEAST SEVERAL MONTHS, SAID ADHESIVE HAVING ADDED THERETO AN ALKALINE EARTH COMPOUND IN A PROPORTION NOT MORE THAN TEN PER CENT. (10%) IN WEIGHT BASED ON THE DRY WEIGHT OF THE CASEIN, THE ADDED ALKALINE EARTH COMPOUND ACTING TO INCREASE THE VISCOSITY OF THE ADHESIVE PASTE WHILE RETAINING THE STABILITY AND LONG WORKING LIFE THEREOF.
Claim 2
Dependent Claim
134 words
A VISCOSITY-STABLE CASEIN ADHESIVE COMPRISING CASEIN AS THE ADHESIVE COMPONENT, A CASEIN COLUBILIZER OF WHICH THE PRIME AND NECESSARY SOLUBILIZING AGENT IS SELECTED FROM THE GROUP CONSISTING OF UREA AND AMMONIUM THIOCYANATE, THE UREA AND AMMONIUM THIOCYANATE, SINGLY OR IN COMBINATION, BEING PRESENT IN THE PROPORTION OF AT LEAST 50%, BASED ON THE DRY WEIGHT OF THE CASEIN, SUCH ADHESIVE WHEN MIXED WITH WATER PRODUCING AN ADHESIVE PASTE WHICH IS SUBSTANTIALLY STABLE AND HAS A WORKING LIFE OF AT LEAST SEVERAL MONTHS, SAID ADHESIVE HAVING ADDED THERETO AN ALKALINE EARTH COMPOUND IN A PROPORTION NOT MORE THAN TEN PER CENT. (10%) IN WEIGHT BASED ON THE DRY WEIGHT OF THE CASEIN, THE ADDED ALKALINE EARTH COMPOUND ACTING TO INCREASE THE VISCOSITY OF THE ADHESIVE PASTE WHILE RETAINING THE STABILITY AND LONG WORKING LIFE THEREOF.
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) | 1955-10-07 | 1956-04-07 | 1956-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-07 | 1960-04-07 | 1960-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-07 | 1964-04-07 | 1964-10-07 | $7700.00 | Window Closed / Lapsed |