Patent US2400418A successfully refreshed from Google Patents.
Patent US2936249A successfully refreshed from Google Patents.
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 15:21
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.
References Cited (Backward Citations)
US2130212A
Cited
US2253146A
Cited
US2343095A
Cited
US2421363A
Cited
US2500122A
Cited
US2662032A
Cited
US2741568A
Cited
US2808349A
Cited
US2843573A
Cited
US2840546A
Cited
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 |