Patent US2528186A successfully refreshed from Google Patents.
US2528186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated tetra-alkyl thiuram disulfides
Assignee: Sharples Chemicals Inc
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Filing: 1946-10-09
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Granted: 1950-10-31
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Expires: 1966-10-09
Abstract
No abstract record available.
Inventors
- 👤 Cletius D Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:45
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/39; C08K5/40; C08K9/00; C08K9/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
IN THE MANUFACTURE OF COATED TETRA-ALKYL THIURAM DISULFIDES, THE PROCESS COMPRISING OXIDIZING A SALT OF A DIAKYL DITHIOCARBAMIC ACID IN AQUEOUS SOLUTION TO FORM PARTICLES OF THE DESIRED TETRA-ALKYL THIURAM DISULFIDE, COATING THE TETRA-ALKYL THIURAM DISULFIDE PARTICLES WITH A RELATIVELY NON-VOLATILE HYDROPHOBIC LIQUID COATING AGENT IN AMOUNT FROM 0.5% TO 5% BASED ON THE WEIGHT OF SAID PARTICLES WHILE IN THE PRESENCE OF THE AQUEOUS MEDIUM FROM WHICH THEY ARE FORMED AND PRECIPITATED, REMOVING THE AQUEOUS MEDIUM FROM THE COATED PARTICLES OF TETRAALKYL, THIURAM DISULFIDE, DRYING SAID PARTICLES, AND THEREAFTER APPLYING A NORMALLY SOLID ANTIDUSTING COATING AGENT IN MOLTEN FORM TO SAID PREVIOUSLY-COATED AND DRIED PARTICLES.
Claim 2
Dependent Claim
106 words
IN THE MANUFACTURE OF COATED TETRA-ALKYL THIURAM DISULFIDES, THE PROCESS COMPRISING OXIDIZING A SALT OF A DIAKYL DITHIOCARBAMIC ACID IN AQUEOUS SOLUTION TO FORM PARTICLES OF THE DESIRED TETRA-ALKYL THIURAM DISULFIDE, COATING THE TETRA-ALKYL THIURAM DISULFIDE PARTICLES WITH A RELATIVELY NON-VOLATILE HYDROPHOBIC LIQUID COATING AGENT IN AMOUNT FROM 0.5% TO 5% BASED ON THE WEIGHT OF SAID PARTICLES WHILE IN THE PRESENCE OF THE AQUEOUS MEDIUM FROM WHICH THEY ARE FORMED AND PRECIPITATED, REMOVING THE AQUEOUS MEDIUM FROM THE COATED PARTICLES OF TETRAALKYL, THIURAM DISULFIDE, DRYING SAID PARTICLES, AND THEREAFTER APPLYING A NORMALLY SOLID ANTIDUSTING COATING AGENT IN MOLTEN FORM TO SAID PREVIOUSLY-COATED AND DRIED PARTICLES.
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) | 1953-10-30 | 1954-05-01 | 1954-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-30 | 1958-05-01 | 1958-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-30 | 1962-05-01 | 1962-10-31 | $7700.00 | Window Closed / Lapsed |