US2618623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solvents, swelling agents and/or plasticizers for polymers and mixed polymers of acrylic nitril
Assignee: Roehm GmbH Darmstadt
•
Filing: 1950-08-28
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Granted: 1952-11-18
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Expires: 1970-08-28
Abstract
No abstract record available.
Inventors
- 👤 Tessmar Klaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:56
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/315
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
A NEW COMPOSITION OF MATTER COMPRISING (1) A POLYMER OF ACRYLIC NITRIL AND (2) A SUBSTANCE HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
20 words
A NEW COMPOSITION OF MATTER COMPRISING (1) A POLYMER OF ACRYLIC NITRIL AND (2) A SUBSTANCE HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
US2517544A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-18 | 1956-05-19 | 1956-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-18 | 1960-05-19 | 1960-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-18 | 1964-05-19 | 1964-11-18 | $7700.00 | Window Closed / Lapsed |