Patent EP0494034A2 successfully refreshed from Google Patents.
US2548433A
Expired / Lapsed
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Plastisols containing nitrogenous viscosity controlling agents
Assignee: Heyden Chemical Corp
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Filing: 1949-10-12
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Granted: 1951-04-10
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Expires: 1969-10-12
Abstract
No abstract record available.
Inventors
- 👤 David X Klein
- 👤 Mark N Curgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:54
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A POLYVINYL CHLORIDE RESIN COMPOSITION INCLUDING A PLASTICIZER, HAVING ITS VISCOSITY LOWERED BY THE PRESENCE THEREIN OF AN ALIPHATIC AMINE HAVING A DISSOCIATION CONSTANT GREATER THAN 1.0X10-6 AND WHICH IS LIQUID AT ROOM TEMPERATURE.
Claim 2
Dependent Claim
34 words
A POLYVINYL CHLORIDE RESIN COMPOSITION INCLUDING A PLASTICIZER, HAVING ITS VISCOSITY LOWERED BY THE PRESENCE THEREIN OF AN ALIPHATIC AMINE HAVING A DISSOCIATION CONSTANT GREATER THAN 1.0X10-6 AND WHICH IS LIQUID AT ROOM TEMPERATURE.
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) | 1954-04-09 | 1954-10-09 | 1955-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-09 | 1958-10-09 | 1959-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-09 | 1962-10-09 | 1963-04-10 | $7700.00 | Window Closed / Lapsed |