Patent US2769700A successfully refreshed from Google Patents.
US2769700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
One-stage resin bonded diamond abrasive wheel
Assignee: Unifrax I LLC
•
Filing: 1953-01-21
•
Granted: 1956-11-06
•
Expires: 1973-01-21
Abstract
No abstract record available.
Inventors
- 👤 George J Goepfert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:22
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/02; B24D3/20; B24D3/28; B24D3/285
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
THE METHOD OF MAKING A RESIN-BONDED DIAMOND GRINDING WHEEL WHICH COMPRISES MAKING A SOLID ONE-STEP "A" STAGE RESIN BY REACTING PHENOL AND FORMALDEHYDE IN THE PROPORTION OF 1 MOL PHENOL TO ABOUT 1-1.7 MOLS FORMALDEHYDE IN THE PRESENCE OF A NITROGEN-CONTAINING BASE AS A CATALYST UNTIL A SOLID RESIN IS FORMED; GRINDING THE RESIN TO A FINE POWDER; PREPARING A MOLDABLE MIXTURE COMPRISING ESSENTIALLY THE RESIN POWDER, GRANULAR FILLING MATERIAL, DIAMONDS, AND AN ALKALINE EARTH OXIDE CATALYST IS FOR THE POWDERED RESIN; FORMING AN ARTICLE FROM THE MIX THUS PREPARED; AND HEATING THE ARTICLE TO CONVERT THE RESIN SUBSTANTIALLY TO THE "C" STAGE.
Claim 2
Independent Claim
103 words
THE METHOD OF MAKING A RESIN-BONDED DIAMOND GRINDING WHEEL WHICH COMPRISES MAKING A SOLID ONE-STEP "A" STAGE RESIN BY REACTING PHENOL AND FORMALDEHYDE IN THE PROPORTION OF 1 MOL PHENOL TO ABOUT 1-1.7 MOLS FORMALDEHYDE IN THE PRESENCE OF A NITROGEN-CONTAINING BASE AS A CATALYST UNTIL A SOLID RESIN IS FORMED; GRINDING THE RESIN TO A FINE POWDER; PREPARING A MOLDABLE MIXTURE COMPRISING ESSENTIALLY THE RESIN POWDER, GRANULAR FILLING MATERIAL, DIAMONDS, AND AN ALKALINE EARTH OXIDE CATALYST IS FOR THE POWDERED RESIN; FORMING AN ARTICLE FROM THE MIX THUS PREPARED; AND HEATING THE ARTICLE TO CONVERT THE RESIN SUBSTANTIALLY TO THE "C" STAGE.
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) | 1959-11-06 | 1960-05-07 | 1960-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-06 | 1964-05-07 | 1964-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-06 | 1968-05-07 | 1968-11-06 | $7700.00 | Window Closed / Lapsed |