OKA MASATAKA has a total of 19 patent applications. Its first patent ever was published in 1976. It filed its patents most often in Japan. Its main competitors in its focus markets civil engineering are KISHIDA HIDEAKI, TATENO KINJI and NICHIYOO KK.
Injection device of epoxy resin adhesive used for connecting steel plate for reinforcement of bridge pier
JPH0343540A
Method of construction for fixedly embedding bar steel using filling adhesive having expansibility of inorganic system water mold
JPH02272169A
Water-stopping work using quick-setting material
JPS62206169A
Construction method for connecting new and old concretes by together using adhesion due to emulsion adhesive and reinforcing iron rod
JPS6241750A
Naticorrosive ferroconcrete art
JPS60233245A
Chemical injection and water stopping construction method from inner surface of pipe by three-direction hermetical closing of t-shaped branched pipe attachment part of small diameter sewage pipe embedded in ground
JPS60233246A
Chemical injection and water stopping construction method from inner surface by hermetical closing of small diameter sewage pipe embedded in ground
JPS59141670A
Pressurizing construction method by elastomer apparatus for certainly injecting filler material in injecting filler material by attaching steel plate to concrete floor plate and peeled detached part of beam lower end
JPS598877A
Reinjection of epoxy resin for certainly constructing cement mortar injection at time of repairing of concrete floor panel or beam
JPS598812A
Ascertaining of injection for certainly pouring epoxy resin when bridge beam reinforcing steel material is adhered under pressure
JPS598813A
Anchor construction method of integrating concrete, epoxy resin and steel material when bridge beam reinforcing steel material is adhered under pressure
JPS58222258A
Fine aggregate material scattering method for reinforcing and integrating attached steel plate and poured mortar when concrete floor panel and beam are repaired
JPS58199947A
Water stopping and fundation improving construction of small diameter city water pipe embedded in underground from ground by two-liquid type simple chemical liquid injecting machine
JPS58150630A
Regulating work for setting level of pillar and machine and packing work on foundation
JPS5837207A
Anchor engineering method for integrating concrete, epoxy resin and steel material when bridge beam is reinforced and steel material is adhered
JPS54149015A
Simple injection water cuttoff method from ground to sewer pipe buried under ground
JPS54129708A
Method of simple ground injection construction
JPS54112529A
Method of construction of grout common using system simple reinforcement of tunnel
JPS5332954A
Construction work of nonnsuspension of water supply and water stop of water service pipe
