Inventor
MASUNAGA HIROSHI
JP31 patents
⚠️ This page may combine multiple inventors who share the name “MASUNAGA HIROSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
OKAMURA CORP
17 patentsUS7726740B2Jun 1, 2010
Backrest-tilting device
OKAMURA CORP57 citations98
US6257665B1Jul 10, 2001
Chair
OKAMURA CORP189 citations98
US7097249B2Aug 29, 2006
Tilting mechanism for a chair and chair having the same
OKAMURA CORP78 citations97
US6626497B2Sep 30, 2003
Backrest of a chair
OKAMURA CORP130 citations97
US7837272B2Nov 23, 2010
Chair and the structure for stretching a mesh over an element of the chair
OKAMURA CORP120 citations96
US7243993B2Jul 17, 2007
Tilting mechanism for a chair and a chair having the same
OKAMURA CORP42 citations95
US9578968B2Feb 28, 2017
Chair
OKAMURA CORP37 citations94
US7246859B2Jul 24, 2007
Chair
OKAMURA CORP31 citations92
US9603451B2Mar 28, 2017
Height adjustment device in fixture, and armrest device for chair provided with height adjustment device
OKAMURA CORP18 citations81
US10932575B2Mar 2, 2021
Armrest and chair
OKAMURA CORP4 citations73
US10159350B2Dec 25, 2018
Chair
OKAMURA CORP4 citations73
US11019928B2Jun 1, 2021
Armrest and chair
OKAMURA CORP5 citations71
US10966530B2Apr 6, 2021
Backrest, lumbar support, chair, attachment structure for optional member, optional member, and furniture
OKAMURA CORP4 citations71
US11439239B2Sep 13, 2022
Backrest and chair
OKAMURA CORP6 citations66
US10264886B2Apr 23, 2019
Reaction force mechanism and chair using same
OKAMURA CORP1 citations62
US11019930B2Jun 1, 2021
Load support structure for chair, load support body for chair, and chair
OKAMURA CORP0 citations52
US10334953B2Jul 2, 2019
Furniture, load support member for chair, and chair
OKAMURA CORP0 citations37
TOSHIBA MITSUBISHI ELEC IND
4 patentsUS10263457B2Apr 16, 2019
Uninterruptible power supply device and uninterruptible power supply system using the same
TOSHIBA MITSUBISHI ELEC IND5 citations73
US10050469B2Aug 14, 2018
Uninterruptible power supply device and uninterruptible power supply system using the same
TOSHIBA MITSUBISHI ELEC IND4 citations73
US10756567B2Aug 25, 2020
Uninterruptible power supply device
TOSHIBA MITSUBISHI ELEC IND2 citations65
US10044281B2Aug 7, 2018
Bidirectional insulated DC/DC converter and smart network using the same
TOSHIBA MITSUBISHI ELEC IND0 citations37