US3208836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cold press method of making abrasive articles
Assignee: Hexion Inc
•
Filing: 1960-09-09
•
Granted: 1965-09-28
•
Expires: 1980-09-09
Abstract
No abstract record available.
Inventors
- 👤 Joseph M Biglin
- 👤 Jerry J Greaves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:51
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/02; B24D3/20; B24D3/28; B24D3/285
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
IN THE PROCESS OF MAKING ABRASIVE ARTICLES OF HIGH DENSITY BY COLD PRESSING COATED ABRASIVE GRAINS, THE IMPROVEMENT WHICH COMPRISES HEATING THE ABRASIVE GRAINS, MIXING THEM WITH A SINGLE STAGE LIQUID PHENOL ALDEHYDE RESIN, CONTINUING THE HEATING AND MIXING UNTIL THE RESIN CONTAINS ONLY 2-5% OF VOLATILES, BASED ON THE TOTAL WEIGHT OF THE RESIN, AND THE GRAINS ARE COATED WITH THE RESIN, AND THEN COATING SAID GRAINS WITH A DRY TWO-STAGE HEAT HARDENABLE PHENOL ALDEHYDE RESIN MIXED WITH A SOLID, FINELY DIVIDED, CHEMICALLY INERT, MINERAL FILLER.
Claim 2
Dependent Claim
87 words
IN THE PROCESS OF MAKING ABRASIVE ARTICLES OF HIGH DENSITY BY COLD PRESSING COATED ABRASIVE GRAINS, THE IMPROVEMENT WHICH COMPRISES HEATING THE ABRASIVE GRAINS, MIXING THEM WITH A SINGLE STAGE LIQUID PHENOL ALDEHYDE RESIN, CONTINUING THE HEATING AND MIXING UNTIL THE RESIN CONTAINS ONLY 2-5% OF VOLATILES, BASED ON THE TOTAL WEIGHT OF THE RESIN, AND THE GRAINS ARE COATED WITH THE RESIN, AND THEN COATING SAID GRAINS WITH A DRY TWO-STAGE HEAT HARDENABLE PHENOL ALDEHYDE RESIN MIXED WITH A SOLID, FINELY DIVIDED, CHEMICALLY INERT, MINERAL FILLER.
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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) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |