US3190047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making diamond knives
Assignee: Individual
•
Filing: 1962-06-11
•
Granted: 1965-06-22
•
Expires: 1982-06-11
Abstract
No abstract record available.
Inventors
- 👤 Villalobos Hum Fernandez-Moran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:16
CPC Classifications
B; B24; B24B; B24B3/00; B24B3/34; G; G01; G01N; G01N1/00; G01N1/02; G01N1/04; G01N1/06; G01N2001/061
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A METHOD OF PRODUCING A KNIFE EDGE WHICH COMPRISES SELECTING A DIAMOND, CLEAVING SAID DIAMOND ALONG THE PLANE OF A CLEAVAGE FACE OF THE DIAMOND GRINDING SAID FACE WITH FINE ABRASIVE POWDER ON A SMOOTH DISC, POLISHING SAID FACE ON A DISC ROTATING AT A SPEED HIGHER THAN 10,000 R.P.M. AND COATED WITH A PASTE CONTAINING A GRINDING POWDER HAVING A PARTICLE SIZE SMALLER THAN 0.005 MICRON AND CUTTING AND POLISHING IN LIKE MANNER A SECOND FACE INTERSECTING SAID FIRST MENTIONED FACE AT AN ANGLE OF 50* TO 80* TO PRODUCE A CUTTING EDGE HAVING A SHARPNESS OF 20 TO 50 ANGSTROM UNITS.
Claim 2
Independent Claim
103 words
A METHOD OF PRODUCING A KNIFE EDGE WHICH COMPRISES SELECTING A DIAMOND, CLEAVING SAID DIAMOND ALONG THE PLANE OF A CLEAVAGE FACE OF THE DIAMOND GRINDING SAID FACE WITH FINE ABRASIVE POWDER ON A SMOOTH DISC, POLISHING SAID FACE ON A DISC ROTATING AT A SPEED HIGHER THAN 10,000 R.P.M. AND COATED WITH A PASTE CONTAINING A GRINDING POWDER HAVING A PARTICLE SIZE SMALLER THAN 0.005 MICRON AND CUTTING AND POLISHING IN LIKE MANNER A SECOND FACE INTERSECTING SAID FIRST MENTIONED FACE AT AN ANGLE OF 50* TO 80* TO PRODUCE A CUTTING EDGE HAVING A SHARPNESS OF 20 TO 50 ANGSTROM UNITS.
References Cited (Backward Citations)
US1213164A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-21 | 1968-12-21 | 1969-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-21 | 1972-12-21 | 1973-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-21 | 1976-12-21 | 1977-06-22 | $7700.00 | Window Closed / Lapsed |