US2936249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for conferring antistatic properties to synthetic textile fibers
Assignee: Akzona Inc
•
Filing: 1955-06-01
•
Granted: 1960-05-10
•
Expires: 1975-06-01
Abstract
No abstract record available.
Inventors
- 👤 Hennemann Georg
- 👤 Lutgerhorst Albertus Gerardus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:34
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/26; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; D; D06; D06M; D06M13/00; D06M13/322; D06M13/46; D06M15/00; D06M15/19; D06M15/21; D06M15/263; H; H05; H05F; H05F1/00; H05F1/02; C08J2433/00; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/17; Y10S260/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A PROCESS FOR IMPARTING ANTISTATIC PROPERTIES TO HIGH MOLECULAR WEIGHT SYNTHETIC POLYMERIC FIBERS, THE STEPS CONSISTING ESSENTIALLY OF TREATING THE FIBERS WITH AN AQUEOUS SOLUTION OF POLYACRYLIC ACID AT A TEMPERATURE LESS THAN 100* C., THEREAFTER DRYING THE THUS PRE-TREATED FIBERS, SUBSEQUENTLY HEATING THEM TO AN ELEVATED TEMPERATURE ABOVE 100* C., THEN TREATING THEM WITH AN AQUEOUS SOLUTION OF A QUATERNARY ALKYL AMMONIUM COMPOUND, AND FINALLY DRYING THEM.
Claim 2
Dependent Claim
68 words
A PROCESS FOR IMPARTING ANTISTATIC PROPERTIES TO HIGH MOLECULAR WEIGHT SYNTHETIC POLYMERIC FIBERS, THE STEPS CONSISTING ESSENTIALLY OF TREATING THE FIBERS WITH AN AQUEOUS SOLUTION OF POLYACRYLIC ACID AT A TEMPERATURE LESS THAN 100* C., THEREAFTER DRYING THE THUS PRE-TREATED FIBERS, SUBSEQUENTLY HEATING THEM TO AN ELEVATED TEMPERATURE ABOVE 100* C., THEN TREATING THEM WITH AN AQUEOUS SOLUTION OF A QUATERNARY ALKYL AMMONIUM COMPOUND, AND FINALLY DRYING THEM.
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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) | 1963-05-10 | 1963-11-09 | 1964-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-10 | 1967-11-09 | 1968-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-10 | 1971-11-09 | 1972-05-10 | $7700.00 | Window Closed / Lapsed |