Patent US2668154A successfully refreshed from Google Patents.
US2668154A
Expired / Lapsed
US
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Protein adhesives from animal glue, a hydrazide and formaldehyde
Assignee: Mathieson Chemical Corp
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Filing: 1950-05-26
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Granted: 1954-02-02
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Expires: 1970-05-26
Abstract
No abstract record available.
Inventors
- 👤 Jr George Otto Orth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:03
CPC Classifications
C; C09; C09H; C09H11/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
75 words
A MODIFIED GLUE COMPOSITION WHICH CONSISTS ESSENTIALLY OF THE PRODUCT OBTAINED BY HEATING AN AQUEOUS MIXTURE OF A MAJOR PROPORTION OF ANIMAL GLUE AND OF MINOR PROPORTIONS OF FORMALDEHYDE AND OF A HYDRAZIDE CAPABLE OF FORMING A WATER-SOLUBLE PRODUCT WITH FORMALDEHYDE, SAID HYDRAZIDE BEING SELECTED FROM THE GROUP CONSISTING OF ORGANIC CARBOXYLIC ACID HYDRAZIDES AND THIOCRBOHYDRAZIDE, AND SAID MIXTURE HAVING BEEN HEATED FOR A PERIOD OF TIME SUFFICIENT TO CONVERT THE MIXTURE TO A GEL.
References Cited (Backward Citations)
US2210442A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-01 | 1957-08-03 | 1958-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-01 | 1961-08-03 | 1962-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-01 | 1965-08-03 | 1966-02-02 | $7700.00 | Window Closed / Lapsed |