loadpatents
Patent applications and USPTO patent grants for Guo; Kangquan.The latest application filed is for "double-cylinder internal combustion engine".
Patent | Date |
---|---|
Curved groove ball bearing mechanism Grant 11,421,764 - Guo , et al. August 23, 2 | 2022-08-23 |
Double-cylinder internal combustion engine Grant 11,193,418 - Guo , et al. December 7, 2 | 2021-12-07 |
Curved groove ball bearing without retainer Grant 10,895,281 - Guo , et al. January 19, 2 | 2021-01-19 |
Double-cylinder Internal Combustion Engine App 20210003070 - GUO; Kangquan ;   et al. | 2021-01-07 |
Curved Groove Ball Bearing Mechanism App 20200362948 - GUO; Kangquan ;   et al. | 2020-11-19 |
Curved Groove Ball Bearing Without Retainer App 20200224715 - GUO; Kangquan ;   et al. | 2020-07-16 |
Curved trench ball bearing Grant 9,970,484 - Guo , et al. May 15, 2 | 2018-05-15 |
Curved Trench Ball Bearing App 20160123395 - Guo; Kangquan ;   et al. | 2016-05-05 |
uspto.report is an independent third-party trademark research tool that is not affiliated, endorsed, or sponsored by the United States Patent and Trademark Office (USPTO) or any other governmental organization. The information provided by uspto.report is based on publicly available data at the time of writing and is intended for informational purposes only.
While we strive to provide accurate and up-to-date information, we do not guarantee the accuracy, completeness, reliability, or suitability of the information displayed on this site. The use of this site is at your own risk. Any reliance you place on such information is therefore strictly at your own risk.
All official trademark data, including owner information, should be verified by visiting the official USPTO website at www.uspto.gov. This site is not intended to replace professional legal advice and should not be used as a substitute for consulting with a legal professional who is knowledgeable about trademark law.