Sprainis; Ronald J.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Sprainis; Ronald J..The latest application filed is for "method of making compressible elastomeric spring".
- Sprainis; Ronald J. - Springfield OR
| Patent | Date |
|---|---|
| Shoulder-fired firearm primary and secondary recoil attenuator Grant 10,663,252 - Sprainis , et al. | 2020-05-26 |
| Compressible elastomeric spring Grant 9,562,582 - Sprainis , et al. February 7, 2 | 2017-02-07 |
| Compressible elastomeric spring Grant 8,783,670 - Sprainis , et al. July 22, 2 | 2014-07-22 |
| Method of making compressible elastomeric spring Grant 8,701,290 - Sprainis , et al. April 22, 2 | 2014-04-22 |
| Elastomeric draft gear for a railcar Grant 8,672,151 - Sprainis , et al. March 18, 2 | 2014-03-18 |
| Constant contact side bearing assembly with improved heat dissipation for a railcar Grant 8,528,483 - Sprainis , et al. September 10, 2 | 2013-09-10 |
| Elastomeric pad for a compressible elastomeric spring Grant 8,465,009 - Sprainis , et al. June 18, 2 | 2013-06-18 |
| Method Of Making Compressible Elastomeric Spring App 20130097866 - SPRAINIS; RONALD J. ; et al. | 2013-04-25 |
| Elastomeric Draft Gear For A Railcar App 20130068714 - Sprainis; Ronald J. ; et al. | 2013-03-21 |
| Compressible Elastomeric Spring App 20130069292 - Sprainis; Ronald J. ; et al. | 2013-03-21 |
| Method of making compressible elastomeric spring Grant 8,336,209 - Sprainis , et al. December 25, 2 | 2012-12-25 |
| Combination yoke and elastomeric draft gear Grant 8,136,683 - Sprainis , et al. March 20, 2 | 2012-03-20 |
| Elastomeric draft gear having a housing Grant 8,096,432 - Sprainis , et al. January 17, 2 | 2012-01-17 |
| Combination yoke and elastomeric draft gear having a friction mechanism Grant 8,096,431 - Sprainis , et al. January 17, 2 | 2012-01-17 |
| Method of making elastomeric pad for a compressible elastomeric spring Grant 7,981,348 - Sprainis , et al. July 19, 2 | 2011-07-19 |
| Plate for a compressible elastomeric spring Grant 7,857,273 - Sprainis , et al. December 28, 2 | 2010-12-28 |
| Constant Contact Side Bearing Assembly With Improved Heat Dissipation For A Railcar App 20100294165 - SPRAINIS; RONALD J. ; et al. | 2010-11-25 |
| Elastomeric draft gear having a housing App 20090308829 - Sprainis; Ronald J. ; et al. | 2009-12-17 |
| Plate for a compressible elastomeric spring App 20080283720 - Sprainis; Ronald J. ; et al. | 2008-11-20 |
| Compressible elastomeric spring App 20080284077 - Sprainis; Ronald J. ; et al. | 2008-11-20 |
| Method of making compressible elastomeric spring App 20080271318 - Sprainis; Ronald J. ; et al. | 2008-11-06 |
| Combination yoke and elastomeric draft gear having a friction mechanism App 20080272079 - Sprainis; Ronald J. ; et al. | 2008-11-06 |
| Combination yoke and elastomeric draft gear App 20080272081 - Sprainis; Ronald J. ; et al. | 2008-11-06 |
| Elastomeric pad for a compressible elastomeric spring App 20080272080 - Sprainis; Ronald J. ; et al. | 2008-11-06 |
| Method of making elastomeric pad for a compressible elastomeric spring App 20080272517 - Sprainis; Ronald J. ; et al. | 2008-11-06 |
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