Patent US2674517A successfully refreshed from Google Patents.
US2674517A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dextran filament manufacture
Assignee: Commonwealth Engineering Company of Ohio
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Filing: 1951-08-08
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Granted: 1954-04-06
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Expires: 1971-08-08
Abstract
No abstract record available.
Inventors
- 👤 George L Deniston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:02
CPC Classifications
D; D01; D01F; D01F9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
A METHOD OF PRODUCING A FILAMENT FROM A DEXTRAN BASE WHEREIN DEXTRAN IS REACTED WITH A WATER SOLUBLE RESIN SELECTED FROM THE GROUP CONSISTING OF UREA-FORMALDEHYDE, MELAMINEFORMALDEHYDE AND THEIR EHTERS AND THE PRODUCT
Claim 2
Independent Claim
33 words
A METHOD OF PRODUCING A FILAMENT FROM A DEXTRAN BASE WHEREIN DEXTRAN IS REACTED WITH A WATER SOLUBLE RESIN SELECTED FROM THE GROUP CONSISTING OF UREA-FORMALDEHYDE, MELAMINEFORMALDEHYDE AND THEIR EHTERS AND THE PRODUCT
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |