US2596930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic resins prepared from biguanide-aldehyde condensation products
Assignee: Wyeth Holdings LLC
•
Filing: 1946-10-16
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Granted: 1952-05-13
•
Expires: 1966-10-16
Abstract
No abstract record available.
Inventors
- 👤 Donald W Kaiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:42
CPC Classifications
B; B01; B01J; B01J41/00; B01J41/08; B01J41/12; B01J41/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A WATER-INSOLUBLE, GRANULAR, ANION ACTIVE SYNTHETIC RESINOUS MATERIAL OBTAINED BY BRINGING ABOUT REACTION BETWEEN FORMALDEHYDE, AS THE SOLE ALDEHYDE, AND THE MONOMERIC ORGANIC HEAT CONDENSATION PRODUCT OF A MEMBER OF THE GROUP CONSISTING OF BIGUANIDE, MONO- AND DI-MONOVALENT HYDROCARBON- AND FURFURYL-SUBSTITUTED BIGUANIDES, AND THEIR SALTS WITH A CARBONYL COMPOUND CONTAINNG ONLY CARBON, HYDROGEN AND OXYGEN AND SELECTED FROM THE GROUP CONSISTING OF ALDEHYDES HAVING FROM 2 TO 10 CARBON ATOMS AND KETONES HAVING FROM 3 TO 9 CARBON ATOMS, PERMITTING THE REACTION PRODUCT SO OBTAINED TO GEL, CURING THE GEL BY HEATING, AND GRANULATING THE CURED GEL, THE RELATIVE MOLAR PROPORTIONS OF SAD MEMBER TO SAID CARBONYL COMPOUND IN SAID CONDENSATION PRODUCT BEING FROM 1:1 TO 1:2.
Claim 2
Dependent Claim
117 words
A WATER-INSOLUBLE, GRANULAR, ANION ACTIVE SYNTHETIC RESINOUS MATERIAL OBTAINED BY BRINGING ABOUT REACTION BETWEEN FORMALDEHYDE, AS THE SOLE ALDEHYDE, AND THE MONOMERIC ORGANIC HEAT CONDENSATION PRODUCT OF A MEMBER OF THE GROUP CONSISTING OF BIGUANIDE, MONO- AND DI-MONOVALENT HYDROCARBON- AND FURFURYL-SUBSTITUTED BIGUANIDES, AND THEIR SALTS WITH A CARBONYL COMPOUND CONTAINNG ONLY CARBON, HYDROGEN AND OXYGEN AND SELECTED FROM THE GROUP CONSISTING OF ALDEHYDES HAVING FROM 2 TO 10 CARBON ATOMS AND KETONES HAVING FROM 3 TO 9 CARBON ATOMS, PERMITTING THE REACTION PRODUCT SO OBTAINED TO GEL, CURING THE GEL BY HEATING, AND GRANULATING THE CURED GEL, THE RELATIVE MOLAR PROPORTIONS OF SAD MEMBER TO SAID CARBONYL COMPOUND IN SAID CONDENSATION PRODUCT BEING FROM 1:1 TO 1:2.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-13 | 1955-11-12 | 1956-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-13 | 1959-11-12 | 1960-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-13 | 1963-11-12 | 1964-05-13 | $7700.00 | Window Closed / Lapsed |