Kar; Naresh J.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Kar; Naresh J..The latest application filed is for "rock bit".
- Kar; Naresh J. - Westminster CA
| Patent | Date |
|---|---|
| Rock bit Grant 5,485,890 - Cawthorne , et al. January 23, 1 | 1996-01-23 |
| Hard facing for milled tooth rock bits Grant 4,944,774 - Keshavan , et al. July 31, 1 | 1990-07-31 |
| Cast steel rock bit cutter cones having metallurgically bonded cutter inserts Grant 4,907,665 - Kar , et al. * March 13, 1 | 1990-03-13 |
| Hard facing for milled tooth rock bits Grant 4,836,307 - Keshavan , et al. June 6, 1 | 1989-06-06 |
| Process for laser hardfacing drill bit cones having hard cutter inserts Grant 4,781,770 - Kar November 1, 1 | 1988-11-01 |
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