US2610954A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidized alkali lignin as a rubber reinforcing agent
Assignee: HOWARD SMITH PAPER MILLS Ltd
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Filing: 1948-02-27
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Granted: 1952-09-16
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Expires: 1968-02-27
Abstract
No abstract record available.
Inventors
- 👤 Rudolf A V Raff
- 👤 Jr George H Tomlinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:43
CPC Classifications
C; C08; C08L; C08L9/00; C08L9/06; C08L9/08; C08L97/00; C08L97/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
AS A NEW ARTICLE OF MANUFACTURE, A REINFORCED RUBBER PRODUCT CONSISTING OF BUTADIENESTYRENE-COPOLYMER LATEX HAVING INCORPORATED THEREIN A REINFORCING AGENT CONSISTING OF OXIDIZED ALKALI LIGNIN HAVING A MELTING POINT ABOVE 240* C. AND DERIVED FROM PLANT MATERIAL SELECTED FROM THE GROUP CONSISTING OF ASPEN AND CONIFEROUS PLATNS.
Claim 2
Dependent Claim
47 words
AS A NEW ARTICLE OF MANUFACTURE, A REINFORCED RUBBER PRODUCT CONSISTING OF BUTADIENESTYRENE-COPOLYMER LATEX HAVING INCORPORATED THEREIN A REINFORCING AGENT CONSISTING OF OXIDIZED ALKALI LIGNIN HAVING A MELTING POINT ABOVE 240* C. AND DERIVED FROM PLANT MATERIAL SELECTED FROM THE GROUP CONSISTING OF ASPEN AND CONIFEROUS PLATNS.
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) | 1955-09-16 | 1956-03-17 | 1956-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-16 | 1960-03-17 | 1960-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-16 | 1964-03-17 | 1964-09-16 | $7700.00 | Window Closed / Lapsed |