US2876085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing grinding materials
Assignee: Individual
•
Filing: 1957-03-20
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Granted: 1959-03-03
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Expires: 1977-03-20
Abstract
No abstract record available.
Inventors
- 👤 Horie Tomohiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:10
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/02; B24D3/20; B24D3/28; B24D3/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A PROCESS FOR PRODUCING A CELLULAR ABRASIVE ARTICLE HAVING ABRASIVE PARTICLES UNIFORMLY DISTRIBUTED THEREWITHIN, WHICH COMPRISES: FORMING AN AQUEOUS SOLUTION OF POLYVINYL ALCOHOL; SEPARATELY FORMING A STABLE, AQUEOUS, FORMED MASS BY MIXING WATER WITH A SURFACE ACTIVE FORMING AGENT AND AGITATING SAME TO FORM A STABLE FOAM HAVING INDEPENDENT PORES; MIXING SAID FOAMED MASS, ABRASIVE PARTICLES AND SAID AQUEOUS SOLUTION OF POLYVINYL ALCOHOL TO FORM A UNIFORMLY FOAMED, AQUEOUS, POLYVINYL ALCOHOL MASS HAVING ABRASIVE PARTICLES UNIORMLY DISTRIBUTED THROUGHOUT; INCORPORATING A CATALYST IN SAID FOAMED, AQUEOUS, POLYVINYL ALCOHOL MASS, AND THEREAFTER ADDING AND UNIFORMLY MIXING FORMALDEHYDE IN SAID FOAMED, AQUEOUS, POLYVINYL ALCOHOL MASS TO REACT THE FORMALDEHYDE WITH THE POLYVINYL ALCOHOL TO CAUSE GELATION AND RIGIDIFICATION OF SAID MASS AND THEREBY PRODUCE A CELLULAR ARTICLE HAVING INDEPENDENT PORES INTERCONNECTED BY FINE CAPILLARY TUBES AND HAVING ABRASIVE PARTICLES UNIFORMLY DISTRIBUTED AND RETAINED IN THE GELLED MASS.
Claim 2
Dependent Claim
144 words
A PROCESS FOR PRODUCING A CELLULAR ABRASIVE ARTICLE HAVING ABRASIVE PARTICLES UNIFORMLY DISTRIBUTED THEREWITHIN, WHICH COMPRISES: FORMING AN AQUEOUS SOLUTION OF POLYVINYL ALCOHOL; SEPARATELY FORMING A STABLE, AQUEOUS, FORMED MASS BY MIXING WATER WITH A SURFACE ACTIVE FORMING AGENT AND AGITATING SAME TO FORM A STABLE FOAM HAVING INDEPENDENT PORES; MIXING SAID FOAMED MASS, ABRASIVE PARTICLES AND SAID AQUEOUS SOLUTION OF POLYVINYL ALCOHOL TO FORM A UNIFORMLY FOAMED, AQUEOUS, POLYVINYL ALCOHOL MASS HAVING ABRASIVE PARTICLES UNIORMLY DISTRIBUTED THROUGHOUT; INCORPORATING A CATALYST IN SAID FOAMED, AQUEOUS, POLYVINYL ALCOHOL MASS, AND THEREAFTER ADDING AND UNIFORMLY MIXING FORMALDEHYDE IN SAID FOAMED, AQUEOUS, POLYVINYL ALCOHOL MASS TO REACT THE FORMALDEHYDE WITH THE POLYVINYL ALCOHOL TO CAUSE GELATION AND RIGIDIFICATION OF SAID MASS AND THEREBY PRODUCE A CELLULAR ARTICLE HAVING INDEPENDENT PORES INTERCONNECTED BY FINE CAPILLARY TUBES AND HAVING ABRASIVE PARTICLES UNIFORMLY DISTRIBUTED AND RETAINED IN THE GELLED MASS.
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) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |