US3061398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aftertreatment of wet spun acrylonitrile polymer filaments with aqueous zinc oxide solution
Assignee: Monsanto Chemicals Ltd
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Filing: 1960-04-22
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Granted: 1962-10-30
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Expires: 1980-04-22
Abstract
No abstract record available.
Inventors
- 👤 John D Veitch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:53
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/673; D06P1/67333; D06P1/67341; D01; D01F; D01F6/00; D01F6/02; D01F6/18; D01F6/28; D01F6/38; D01F6/44; D01F6/54; D06M; D06M11/00; D06M11/32; D06M11/36; D06M11/44; Y; Y10; Y10S; Y10S8/00; Y10S8/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A METHOD OF AFTERTREATING FILAMENTS WET SPUN FROM AN ACRYLONITRILE POLYMER DISSOLVED IN A SOLVENT SELECTED FROM THE GROUP CONSISTING OF N,N-DIMETHYLFORMAMIDE AND N,N-DIMETHYLACETAMIDE CONSISTING OF THE STEPS OF CONTINUOUSLY STRETCHING SAID FILAMENTS TO INCREASE THE MOLEC-
Claim 2
Independent Claim
37 words
A METHOD OF AFTERTREATING FILAMENTS WET SPUN FROM AN ACRYLONITRILE POLYMER DISSOLVED IN A SOLVENT SELECTED FROM THE GROUP CONSISTING OF N,N-DIMETHYLFORMAMIDE AND N,N-DIMETHYLACETAMIDE CONSISTING OF THE STEPS OF CONTINUOUSLY STRETCHING SAID FILAMENTS TO INCREASE THE MOLEC-
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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) | 1965-10-29 | 1966-04-30 | 1966-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-29 | 1970-04-30 | 1970-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-29 | 1974-04-30 | 1974-10-30 | $7700.00 | Window Closed / Lapsed |