Chellappa; Sudarsanam
Patent Applications and Registrations
Patent applications and USPTO patent grants for Chellappa; Sudarsanam.The latest application filed is for "drilling tool having pre-fabricated components".
- Chellappa; Sudarsanam - Houston TX
| Patent | Date |
|---|---|
| Drilling Tool Having Pre-fabricated Components App 20210222497 - Zhang; Youhe ; et al. | 2021-07-22 |
| Downhole milling cutting structures Grant 10,648,266 - Su , et al. | 2020-05-12 |
| Downhole Milling Cutting Structures App 20180094496 - Su; Zhenbi ; et al. | 2018-04-05 |
| Actuating a downhole tool Grant 9,926,746 - Gao , et al. March 27, 2 | 2018-03-27 |
| Tool For Measuring Wellbore Geometry App 20160032710 - Hu; Jianbing ; et al. | 2016-02-04 |
| Actuating A Downhole Tool App 20140374163 - Gao; Rui ; et al. | 2014-12-25 |
| Metal-to-metal seal with retention device Grant 8,607,861 - Saylor, III , et al. December 17, 2 | 2013-12-17 |
| RCD sealing elements with multiple elastomer materials Grant 8,596,345 - Li , et al. December 3, 2 | 2013-12-03 |
| Rcd Sealing Elements With Multiple Elastomer Materials App 20120118559 - Li; Yanmei ; et al. | 2012-05-17 |
| Seal with dynamic sealing surface at the outside diameter Grant 8,020,638 - Chellappa , et al. September 20, 2 | 2011-09-20 |
| Metal-to-metal Seal With Retention Device App 20110095485 - Saylor, III; James E. ; et al. | 2011-04-28 |
| Elastomeric seal assembly having auxiliary annular seal components Grant 7,461,708 - Yong , et al. December 9, 2 | 2008-12-09 |
| Seal With Dynamic Sealing Surface At The Outside Diameter App 20080099244 - Chellappa; Sudarsanam ; et al. | 2008-05-01 |
| Rock-bit seals with asymmetric contact profiles App 20060065445 - Chellappa; Sudarsanam ; et al. | 2006-03-30 |
| Elastomeric seal assembly having auxiliary annular seal components App 20060032673 - Yong; Zhou ; et al. | 2006-02-16 |
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