Inventor
HIRUMA KEI
JP28 patents
⚠️ This page may combine multiple inventors who share the name “HIRUMA KEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SEIKO EPSON CORP
22 patentsUS7753474B2Jul 13, 2010
Droplet ejection apparatus, method for recovering droplet ejection head, method for forming thin film, and liquid crystal display
SEIKO EPSON CORP9 citations76
US7794781B2Sep 14, 2010
Film formation method, electro-optical device manufacturing method and electronic apparatus
SEIKO EPSON CORP2 citations62
US7535544B2May 19, 2009
Various methods of manufacture of electro-optical panels, etc. involving a device and method of discharging liquid drops of an alignment film in a single pass from plural nozzles of a drop discharge head
SEIKO EPSON CORP3 citations62
US7499143B2Mar 3, 2009
Liquid crystal discharging method, and liquid crystal discharging device
SEIKO EPSON CORP2 citations62
US7215406B2May 8, 2007
Device for arranging liquid drops, electro-optical panel, electro-optical device, electronic apparatus, method of arranging liquid drops, method of manufacturing electro-optical panel, and method of manufacturing electronic apparatus
SEIKO EPSON CORP4 citations62
US8383211B2Feb 26, 2013
Method of forming thin film
SEIKO EPSON CORP4 citations61
US11999180B2Jun 4, 2024
Recording method and recording device
SEIKO EPSON CORP0 citations60
US12344749B2Jul 1, 2025
Water-based composition and coloring method
SEIKO EPSON CORP0 citations59
US12091562B2Sep 17, 2024
Composition for aqueous ink jet and method for producing recorded product
SEIKO EPSON CORP0 citations59
US11976204B2May 7, 2024
Composition for aqueous ink jet
SEIKO EPSON CORP0 citations59
US11161352B2Nov 2, 2021
Ink jet textile printing ink
SEIKO EPSON CORP0 citations59
US12516214B2Jan 6, 2026
Coloring composition, coloring method, and pigment dispersion
SEIKO EPSON CORP0 citations58
US12291641B2May 6, 2025
Metal pigment composition and coloring method
SEIKO EPSON CORP0 citations58
US12264250B2Apr 1, 2025
Coloring composition and coloring method
SEIKO EPSON CORP0 citations58
US7748825B2Jul 6, 2010
Droplet discharge method, droplet discharge apparatus, manufacturing method for liquid crystal device, liquid crystal device, and electronic apparatus
SEIKO EPSON CORP1 citations52
US8991958B2Mar 31, 2015
Method of driving liquid ejection head and drive signal generation device for liquid ejection head
SEIKO EPSON CORP0 citations51
US7542126B2Jun 2, 2009
Droplet ejection apparatus, method for forming functional film, apparatus for forming liquid crystal alignment film, method for forming liquid crystal alignment film of liquid crystal display, and liquid crystal display
SEIKO EPSON CORP0 citations51
US7224418B2May 29, 2007
Method, program, and apparatus for manufacturing electrooptical panel, and method for manufacturing electronic device
SEIKO EPSON CORP0 citations51
US12109812B2Oct 8, 2024
Ink jet printing method and ink jet printing apparatus
SEIKO EPSON CORP0 citations49
US12305046B2May 20, 2025
Ink jet ink composition and ink jet printing method
SEIKO EPSON CORP0 citations47
US7816277B2Oct 19, 2010
Method for forming deposit, droplet ejection apparatus, electro-optic device, and liquid crystal display
SEIKO EPSON CORP0 citations41
US7713593B2May 11, 2010
Surface treatment method, manufacturing method of color filter substrate, and manufacturing method of electro-optical device
SEIKO EPSON CORP0 citations41
HIRUMA KEI
3 patentsUS8668296B2Mar 11, 2014
Method of driving liquid ejection head and drive signal generation device for liquid ejection head
HIRUMA KEI3 citations60
US8780317B2Jul 15, 2014
Film forming method, film forming device, liquid crystal arrangement method, liquid crystal arrangement device, liquid crystal device, liquid crystal device production method and electronic equipment
HIRUMA KEI0 citations49
US9486769B2Nov 8, 2016
Method of manufacturing gel particles, and drive signal generation device for liquid ejection head
HIRUMA KEI0 citations39