Patent US3042633A successfully refreshed from Google Patents.
US3042633A
Expired / Lapsed
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Rubber powder
Assignee: Uniroyal Inc
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Filing: 1957-04-19
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Granted: 1962-07-03
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Expires: 1977-04-19
Abstract
No abstract record available.
Inventors
- 👤 Woodrow W White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:59
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/12; C08J3/124; E; E01; E01C; E01C7/00; E01C7/08; E01C7/18; E01C7/26; E01C7/265; C08J2321/00; Y; Y10; Y10S; Y10S260/00; Y10S260/22; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2998
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
144 words
THE METHOD OF MAKING FREE FLOWING RESIN COATED RUBBER POWDER OF PARTICULES OF 10 TO 200 MESH SIZE FROM LATEX WHICH COMPRISES FIRST FLOCCULATING THE LATEX THEN DEPOSITING RESIN SELECTED FROM THE GROUP CONSISTING OF PHENOL-ALDEHYDE, RESORCINAL-ALDEHYDE, UREA-ALDEHYDE, MELAMINE ALDEHYDE AND ANILINE-ALDEHYDE RESINS IN WHICH THE ALDEHYDE IS SELECTED FROM THE GROUP CONSISTING OF FORMALDEHYDE AND ACETALDEHYDE ON THE WET RUBBER FLOCES OF THE FLOCCULATED LATEX TO COAT THE SAME, DEWATERING THE COATED FLOCS, AND DRYING SAID RESIN BEING PRECIPATED FROM A SOLUBLE STATE IN AN AQUEOUS ACID MEDIUM IN ADMIXTURE WITH THE FLOCCULATED RUBBER LATEX PARTICULES ONTO SAID FLOCCULATED RUBBER LATEX PARTICULES, SAID RUBBER BEING SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER AND SYNTHETIC TUBBER EMULSION POLYMERATES OF MATERIAL SELECTED FROM THE GROUP CONSISTING OF BUTADIENES-1,3 AND MIXTURES OF BUTADIENES-1,3 WITH COMPOUNDS WHICH CONTAINS A CH2=C< GROUP AND ARE COPOLYMERIZABLE WITH BUTADIENES-1,3.
References Cited (Backward Citations)
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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) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |