| 2023/0167,755 | ENGINE VALVE AND MANUFACTURING METHOD THEREFOR | Jul 29, 20 | Jun 01, 23 | FUJI OOZX Inc. |
| 2022/0403,761 | METHOD AND DEVICE FOR MANUFACTURING HOLLOW, INTERNALLY COOLED VALVES | Jul 22, 20 | Dec 22, 22 | Not available |
| 2022/0152,690 | METHOD FOR PRODUCING A HOLLOW VALVE FOR INTERNAL COMBUSTION ENGINES | Jan 30, 20 | May 19, 22 | Not available |
| 2020/0156,144 | METHOD FOR THE PRODUCTION OF HOLLOW CHAMBER VALVES | Mar 06, 18 | May 21, 20 | Not available |
| 2018/0304,344 | INTERNALLY COOLED VALVE FOR INTERNAL COMBUSTION ENGINES, AS WELL AS METHOD AND DEVICE FOR THE PRODUCTION THEREOF | Jul 06, 16 | Oct 25, 18 | Not available |
| 2016/0273,417 | VALVE TIMING CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE | Nov 11, 14 | Sep 22, 16 | HITACHI AUTOMOTIVE SYSTEMS, LTD. |
| 2014/0366,373 | METHOD FOR PRODUCING A HOLLOW ENGINE VALVE | Jan 21, 13 | Dec 18, 14 | FUJI HOLLOW VALVE INC., Yoshimura Company, |
| 2014/0352,385 | APPARATUS FOR PRODUCING A HOLLOW POPPET VALVE | Aug 20, 14 | Dec 04, 14 | FUJI OOZX INC. |
| 2014/0345,354 | ENGINE VALVE FORGING SYSTEM | Dec 27, 11 | Nov 27, 14 | NITTAN VALVE CO., LTD. |
| 2014/0283,384 | METHOD OF MANUFACTURING A VALVE FOR AN INTERNAL COMBUSTION ENGINE | Oct 14, 11 | Sep 25, 14 | NITTAN VALVE CO., LTD. |
| 2014/0041,222 | METHOD FOR MANUFACTURING VALVE TRAIN PARTS USING METAL POWDER INJECTION MOLDING | Dec 14, 12 | Feb 13, 14 | HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION, |
| 2013/0047,433 | METHOD OF PRODUCING A HOLLOW POPPET VALVE AND AN APPARATUS THEREFOR | Dec 02, 11 | Feb 28, 13 | FUJI OOZX INC. |
| 2012/0304,464 | METHOD FOR MANUFACTURING HOLLOW ENGINE VALVE | Oct 06, 10 | Dec 06, 12 | MITSUBISHI HEAVY INDUSTRIES, LTD., Yoshimura Company, |
| 2012/0266,845 | VALVE APPARATUS FOR AN INTERNAL COMBUSTION ENGINE | Feb 03, 12 | Oct 25, 12 | JP Scope, Inc. |
| 2012/0255,175 | METHOD FOR PRODUCING HOLLOW ENGINE VALVE | Sep 24, 10 | Oct 11, 12 | MITSUBISHI HEAVY INDUSTRIES, LTD., Yoshimura Company, |
| 2012/0228,538 | METHOD FOR MANUFACTURING VALVE UMBRELLA PORTION OF HOLLOW ENGINE VALVE, PRESS DEVICE OF VALVE UMBRELLA PORTION OF HOLLOW ENGINE VALVE, AND HOLLOW ENGINE VALVE | Jul 15, 10 | Sep 13, 12 | FUJI HOLLOW VALVE INC., Yoshimura Company, |
| 2012/0128,470 | SELF-ACTUATING BLEED VALVE FOR A GAS TURBINE ENGINE | Nov 18, 10 | May 24, 12 | HAMILTON SUNDSTRAND CORPORATION |
| 2011/0174,259 | METHOD FOR PRODUCTION OF VALVE HEAD PORTION OF HOLLOW ENGINE VALVE AND HOLLOW ENGINE VALVE | Sep 17, 09 | Jul 21, 11 | FUJI HOLLOW VALVE INC., Yoshimura Company, |
| 2011/0155,088 | ENGINE VALVES | Dec 23, 10 | Jun 30, 11 | AISAN KOGYO KABUSHIKI KAISHA |
| 2010/0181,515 | AIR SPRING WITH CAP | Jan 20, 10 | Jul 22, 10 | BRP-POWERTRAIN GMBH & CO. KG. |