US2548757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of synthetic rubbercarbon black mixtures
Assignee: Uniroyal Inc
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Filing: 1950-03-10
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Granted: 1951-04-10
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Expires: 1970-03-10
Abstract
No abstract record available.
Inventors
- 👤 James W Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:10
CPC Classifications
C; C08; C08L; C08L21/00; C08J; C08J3/00; C08J3/20; C08J3/205; C08J3/21; C08J3/215; C08L23/00; C08L23/02; C08L23/16; C08L9/00; C08L9/06; C08J2321/00; C08L97/00; C08L97/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
THE PROCESS WHICH COMPRISES MIXING WITH SYNTHETIC RUBBER LATEX AN AQUEOUS DISPERSION OF CARBON BLACK CONTAINING AN ALKALI HYDROXIDE SOLUTION OF THE AMORPHOUS PARTICLES OBTAINED FROM THE HIGHLY PARENCHYMOUS PARTICLES OBTAINED FROM THE DOUGLAS FIR TREE, COAGULATING THE MIXTURE, AND SEPARATING THE COAGULUM THEREFROM.
Claim 2
Dependent Claim
44 words
THE PROCESS WHICH COMPRISES MIXING WITH SYNTHETIC RUBBER LATEX AN AQUEOUS DISPERSION OF CARBON BLACK CONTAINING AN ALKALI HYDROXIDE SOLUTION OF THE AMORPHOUS PARTICLES OBTAINED FROM THE HIGHLY PARENCHYMOUS PARTICLES OBTAINED FROM THE DOUGLAS FIR TREE, COAGULATING THE MIXTURE, AND SEPARATING THE COAGULUM THEREFROM.
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) | 1954-04-09 | 1954-10-09 | 1955-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-09 | 1958-10-09 | 1959-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-09 | 1962-10-09 | 1963-04-10 | $7700.00 | Window Closed / Lapsed |