Patent US2829982A successfully refreshed from Google Patents.
US2829982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of coating granules with a thermosetting resin
Assignee: Hexion Inc
•
Filing: 1955-07-25
•
Granted: 1958-04-08
•
Expires: 1975-07-25
Abstract
No abstract record available.
Inventors
- 👤 Howard E Hoyt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:19
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/20; B22C1/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
IN COATING NON-ABSORBENT GRANULES OF SOLID MATERIAL WITH A THERMOSETTING RESIN, THE PROCESS WHICH COMPRISES FORMING A SOLUTION OF THE RESIN IN A LIQUID MEDIUM INCLUDING A VOLATILE SOLVENT FOR THE RESIN AND A LESS VOLATILE LIQUID MIXING PROMOTER THAT IS A NON-SOLVENT FOR THE RESIN, APPLYING THE SAID SOLUTION TO THE GRANULES IN PROPORTION LESS THAN THE WEIGHT OF THE GRANULES, MIXING THE GRANULES AND THE SOLUTION CAUSING THE VOLATILE SOLVENT TO EVAPORATE DURING THE MIXING, SO THAT THE REMAINING NON-SOLVENT MIXING PROMOTER PRECIPITATES THE RESIN SOLUTION UPON THE SAID GRANULES, AND CONTINUING THE MIXING AND EVAPORATION UNTIL NON-SOLVENT EVAPORATES AND THE FINAL PRODUCT BECOMES A FREE FLOWING GRANULAR MIXTURE INCLUDING THE ORIGINAL GRANULES AND RESIN FILMS ADHERED THEREOVER, THE PROPORTION OF THE SAID SOLVENT BEING ABOUT 50-90 PARTS FOR 100 PARTS OF TOTAL WEIGHT OF THE SAID SOLVENT AND NON-SOLVENT.
Claim 2
Dependent Claim
142 words
IN COATING NON-ABSORBENT GRANULES OF SOLID MATERIAL WITH A THERMOSETTING RESIN, THE PROCESS WHICH COMPRISES FORMING A SOLUTION OF THE RESIN IN A LIQUID MEDIUM INCLUDING A VOLATILE SOLVENT FOR THE RESIN AND A LESS VOLATILE LIQUID MIXING PROMOTER THAT IS A NON-SOLVENT FOR THE RESIN, APPLYING THE SAID SOLUTION TO THE GRANULES IN PROPORTION LESS THAN THE WEIGHT OF THE GRANULES, MIXING THE GRANULES AND THE SOLUTION CAUSING THE VOLATILE SOLVENT TO EVAPORATE DURING THE MIXING, SO THAT THE REMAINING NON-SOLVENT MIXING PROMOTER PRECIPITATES THE RESIN SOLUTION UPON THE SAID GRANULES, AND CONTINUING THE MIXING AND EVAPORATION UNTIL NON-SOLVENT EVAPORATES AND THE FINAL PRODUCT BECOMES A FREE FLOWING GRANULAR MIXTURE INCLUDING THE ORIGINAL GRANULES AND RESIN FILMS ADHERED THEREOVER, THE PROPORTION OF THE SAID SOLVENT BEING ABOUT 50-90 PARTS FOR 100 PARTS OF TOTAL WEIGHT OF THE SAID SOLVENT AND NON-SOLVENT.
References Cited (Backward Citations)
US1980151A
Cited
US1901325A
Cited
US2078808A
Cited
US2092903A
Cited
US2303504A
Cited
US2385920A
Cited
US2706188A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-07 | 1961-10-07 | 1962-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-07 | 1965-10-07 | 1966-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-07 | 1969-10-07 | 1970-04-08 | $7700.00 | Window Closed / Lapsed |