US2808346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating an article of polymer containing polypeptide groups to render it unmeltable
Assignee: Akzona Inc
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Filing: 1955-04-06
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Granted: 1957-10-01
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Expires: 1975-04-06
Abstract
No abstract record available.
Inventors
- 👤 Lutgerhorst Albertus Gerardus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:32
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; D; D06; D06M; D06M11/00; D06M11/32; D06M11/36; D06M11/48; D06M11/50; D06M11/51; D06M11/55; D06M11/56; D06M13/00; D06M13/10; D06M13/184; D06M13/188; D06M13/192; D06M13/224; D06M13/238; D06P; D06P3/00; D06P3/02; D06P3/04; D06P3/24; D06P3/245
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A METHOD OF TREATING THREADS, FIBRS, FILMS, FOILS AND THE LIKE PRODUCTS MADE FROM SYNTHETIC THERMOSPLASTIC LINEAR POLYMERS CONTAINING POLYPEPTIDE GROUPS WHICH COMPRISES SUCCESSIVELY CONTACTING IN ANY ARBITARY SEQUENCE THE PRODUCTS WITH A SOLUTION OF A CHROMIUM COMPOUND, A SOLUTION OF TANNIN, AND A SOLUTION OF TARTAREMETIC, THE TEMPERATURE OF THE SOLUTIONS BEING ABOUT 60*
Claim 2
Independent Claim
55 words
A METHOD OF TREATING THREADS, FIBRS, FILMS, FOILS AND THE LIKE PRODUCTS MADE FROM SYNTHETIC THERMOSPLASTIC LINEAR POLYMERS CONTAINING POLYPEPTIDE GROUPS WHICH COMPRISES SUCCESSIVELY CONTACTING IN ANY ARBITARY SEQUENCE THE PRODUCTS WITH A SOLUTION OF A CHROMIUM COMPOUND, A SOLUTION OF TANNIN, AND A SOLUTION OF TARTAREMETIC, THE TEMPERATURE OF THE SOLUTIONS BEING ABOUT 60*
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |