Inventor

YOKOYAMA SHIGEKI

JP51 patents

⚠️ This page may combine multiple inventors who share the name “YOKOYAMA SHIGEKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

YOKOYAMA SHIGEKI

FUJI PHOTO FILM CO LTD

Liquid crystal composition comprising liquid crystal molecules and alignment promoter

Optical compensatory sheet and liquid crystal display

Optical compensatory sheet

Photographic light-sensitive silver halide material containing an antistatic block copolymer

Optical compensatory sheet comprising substrate and optically anisotropic layer

Optically anisotropic sheet containing discotic liquid crystal molecules twisted with optically active triphenylene compound

Antistatic agent containing silver halide photographic light-sensitive materials

Optical compensatory sheet comprising substrate, orientation layer and optically anisotropic layer

Optical compensatory sheet comprising substrate, orientation layer and optically anisotropic layer

Photographic light-sensitive material

Silver halide photographic materials

Optical compensatory sheet comprising substrate, orientation layer and optically anisotropic layer

Method for forming color image

Pyrazoloazoleazomethine dyes

Photographic light-sensitive material containing a specified graft polymer or copolymer

Silver halide photographic light-sensitive materials

Silver halide photographic light-sensitive materials

Photographic light-sensitive material having improved antistaticity

Silver halide photographic element containing crosslinked copolymers

Silver halide photographic light-sensitive material

Silver halide photographic materials

Photographic materials

Antistatic silver halide photographic light-sensitive material

Pyrazoloazoleazomethine dyes

Pyrazoloazole series couplers

Silver halide photographic light-sensitive materials containing nonionic surface active antistatic agent

Silver halide photographic light-sensitive materials with antistatic layer containing nonionic surface active agent

Color image forming dye bleach process

Silver halide photographic material comprising a protective layer containing a polyoxyethylene surface active agent

Silver halide photographic light-sensitive materials

Silver halide photographic light-sensitive material containing a polyoxyethylene surfactant and a nitron compound

NIPPON OIL CO LTD

Split polyethylene stretched material and process for producing the same

Process for the continuous production of high-strength and high-modulus polyethylene material

Method for continuous preparation of polyethylene material having high strength and high modulus of elasticity

Process for the production of polyethylene materials

Process for producing highly oriented polyethylene material

Laminate

Process for producing polyethylene of ultrahigh molecular weight

Process for the production of polyethylene materials

Chlorinated linear ultra low density polyethylene

Easily soluble polyethylene powder for the preparation of fibers or films having high strength and high elastic modulus

NIPPON PETROCHEMICALS CO LTD

Method for producing laminated sheets or films

Finish laminates for high frequency circuits

Ultra-high-molecular-weight polyethylene solution

JUJO PAPER CO LTD

Organic expander for lead storage battery

Dispersant

KUBOTA KK

Method of back-washing submerged-type ceramic membrane separation apparatus

HITACHI METALS LTD

Glow plug for diesel engines

YOKOYAMA SHIGEKI

Pyrazoloazoleazomethine dyes

KODEN KOGYO

Optical transmission apparatus for digital devices