Patent US2819988A successfully refreshed from Google Patents.
US2819988A
Expired / Lapsed
US
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Regenerated cellulose cordage
Assignee: Akzo Nobel UK PLC
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Filing: 1955-06-02
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Granted: 1958-01-14
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Expires: 1975-06-02
Abstract
No abstract record available.
Inventors
- 👤 Robert R Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:46
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/02; D06M13/10; D06M13/224; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2965
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A REGENERATED CELLULOSE MULTI-FILAMENT STRAND COMPRISING FILAMENTS COATED WITH A COMPOSITION WHICH COMPRISES, BASED ON THE WEIGHT OF THE COMPOSITION, FROM 50 TO 75 PERCENT OF A SUBSTANCE FROM THE CLASS CONSISTING OF PITCHES OF COAL AND PETROLEUM ORIGIN AND MINERAL AS PHALTS, 20 TO 40 PERCENT OF A SUBSTANCE FROM THE CLASS CONSISTING OF ROSIN ESTER GUM, MALEIC ANHYDRIDE-MODIFIED ROSIN, AND ROSIN MODIFIED WITH PENTAERYTHRITOL, AND FROM 6 TO 20 PERCENT OF A HARD WAX, SAID COMPOSITION IMPARTING TO THE STRAND INCREASED KNOT STRENGTH.
Claim 2
Dependent Claim
85 words
A REGENERATED CELLULOSE MULTI-FILAMENT STRAND COMPRISING FILAMENTS COATED WITH A COMPOSITION WHICH COMPRISES, BASED ON THE WEIGHT OF THE COMPOSITION, FROM 50 TO 75 PERCENT OF A SUBSTANCE FROM THE CLASS CONSISTING OF PITCHES OF COAL AND PETROLEUM ORIGIN AND MINERAL AS PHALTS, 20 TO 40 PERCENT OF A SUBSTANCE FROM THE CLASS CONSISTING OF ROSIN ESTER GUM, MALEIC ANHYDRIDE-MODIFIED ROSIN, AND ROSIN MODIFIED WITH PENTAERYTHRITOL, AND FROM 6 TO 20 PERCENT OF A HARD WAX, SAID COMPOSITION IMPARTING TO THE STRAND INCREASED KNOT STRENGTH.
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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) | 1961-01-13 | 1961-07-15 | 1962-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-13 | 1965-07-15 | 1966-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-13 | 1969-07-15 | 1970-01-14 | $7700.00 | Window Closed / Lapsed |