||Founder Otsuki Noboru Porous stamp materials (preinked stamps) product research begun.
||ethod of manufacturing stamp materials which uses plastic developed.
Japan-U.S. Patent application
||Sales of EVA porous stamp materials begun.
||Riken Kagaku Kogyo Co. Ltd. Established, Representative Director Noboru Otsuki.
||Research and Development office established.
||Manufacturing molding method for lead pore products.
Katsura Roller Mfg. Co., Ltd. and joint patent application
||Manufacturing molding method for porous products with thermoplastic resin
Sales begun and material for made of polyurethane porous quality nib for
||Headquarters moved to 2-2-52 Inaba Higashi-Osaka City Osaka Prefecture.
The capital increased to 10,000,000 yen.
Process production begun for nib of brush pen.
||Pass new business examination by the Ministry of International Trade and
Factory transferred to 2-25-28 Kasuganishimachi Hirakata City Osaka Prefecture
Hirakata industrial estate．
||Sales begun for EVA porous quality injection molding goods
||Sales begun for NBR porous system quality sintering material.
||Sales begun for eyeliner nib cosmetics made of polyurethane.
||The research and development office is started as Riken Chemical &
||Representative Director Seiko Otsuki appointed after the death of former
||Second floor partially destroyed in fire. Restoration completed two months later
Headquarters moved to 2-25-28 Kasuganishimachi Hirakata City Osaka Prefecture Hirakata industrial estate.
||Representative director Michio Otsuki appointed.
||The Capital increased to 20,000,000 yen.
||Selected to Core Technology Improvement Supporting Project in Osaka and
developed"Automatic Mounting Press"
||Received the prize of Monozukuri excellent company in Osaka 2008.
||Sales begun for Olefin Elastomer oily porous nib.
||Selected to Trial,development and supporting subsidy project for Monozukuri-Small
and Medium-Sized Enterprises and Small-scale business operators.
||Succeede in the development of ultrafine pen nib for eyeliners
||Selected to Monozukuri,Commerce and Service innovation subsidy project.
Resignation of Chairman Seiko Otsuki.
||Completed the mold chips (without grinding).
Selected to subsidy project of innovative Monozukuri, Commerce and Service.
Joint study initiatied with Universities.
New system, 1year in development, to boost our production capacity to 20,000,000pcs/month