Sumitomo Chemical Advanced Technologies


Sumitomo Chemical Advanced Technologies was established in 2003 as Sumika Electronic Materials, Inc. as a wholly owned subsidiary of Sumitomo Chemical Co. Ltd. and chartered to serve the USA electronics, semiconductor, energy, and other IT Related industries. As our business grew and diversified, to more accurately represent the business units within our company and to better align with Sumitomo Chemical Company, Ltd., we changed our name to Sumitomo Chemical Advanced Technologies (SCAT) on April 1, 2017. SCAT manufactures customized epitaxial wafers using proprietary Metal Organic Chemical Vapor Deposition processes. It also specializes in grinding of engineering plastic resins and additives for the aerospace industry. SCAT’s other products and services include photoresist and high purity wet chemicals, polarizing film, optical sheet,  polymer LED and OLED displays, Lithium Battery Separators, High Purity hydrated Al, and LCP and PES engineering plastic resins. SCAT is certified to ISO9001, ISO14001, OHSAS 18001, and DHS CFATS.

Our Mission

Sumitomo Chemical Advanced Technologies is committed to exceeding customer expectations by delivering the highest quality cost efficient products on time.  In order to accomplish this, SCAT will pursue continual improvement by:

  • Pursuing proven processes which enable our customers to achieve success.
  • Expanding our technology base through external partnerships, internal development and personnel growth.
  • Providing timely cost competitive solutions to our customers using documented safe, environmental friendly, and efficient processes.

Our Vision

SCAT will foster a “Culture of Customer Focus” and promote an environment that values and develops its people and business processes with active support from top management. We will strive to have:

Zero Customer Returns
On-Time Delivery
Excellent Customer Satisfaction Survey Results

History of Sumitomo GaAs Epiwafer Business

1971 Organometallics R&D start
1981 MOCVD Research start high electron mobility GaAs (163,000cm2/Vs@77K)
1984 Epitronics founded
1989 AlGaAs/InGaAs p-HEMT R&D
1991 O2-doped AlGaAs buffer FET Technology (Tsukuba Laboratory)
1992 Development of MOCVD system for GaAs Production
GaN LED R&D start
InGaP HBT R&D (Epitronics)
1995 AlGaAs HBT R&D
High Brightness LED R&D, 1cd GaN epiwafer
Development of MOCVD system for GaN Production
ATMI acquires Epitronics
1998 p-HEMT & HB-LED Production start
InGaP-HBT Production start
2001 ATMI expands into Airport facility
2003 Acquired the assets of ATMI GaAs Epitaxy Division — Sumika Electronic Materials established
2004 Received ISO9001 certification
Veeco equipment acquisition
2005 Expanded p-HEMT epiwafer production
2007 Additional reactors installed (1 Aixtron 2600G3 and 1 Veeco E450)
2008 Received ISO14001 certification
2009 Additional reactor installed, Aixtron 2600G3
2011 Received a Certificate of Achievement from the City of Phoenix for 100% compliance with the 2011 pretreatment requirements
2013 Started up an Engineering Plastics Grinding Manufacturing business for the transportation industry
2016 Acquired the Indspec Division of Occidental Petroleum to produce and sell Penacolite resins to the global tire and other industries.
Received OHSAS 18001 certification
2017 Sumika Electronic Materials changes name to Sumitomo Chemical Advanced Technologies.


Company Headquarters
Sumitomo Chemical Advanced Technologies
3832 E. Watkins Street
Phoenix, AZ 85034


(602) 659-2500 Fax (602) 438-2277


Enhancing People’s Lives

Sumitomo Chemical Advanced Technologies is headquartered in Phoenix, Arizona and produces many IT Related and Energy & Functional products used around the world every day.  SCAT’s main areas of business are 1) the manufacture of epitaxial wafers for the global semiconductor, energy, automotive, smartphone, and diode markets, 2) manufacture and grinding of additives for the aerospace and automotive composite industry, 3) development and sales of semiconductor photoresist chemicals and wet chemistry, 4) development and sales of engineering polymers  such as LCP and PES materials, 5) development and sales of display materials such as polarizing film, optical sheet, color filters, and OLED/ PLED technology, and 6) Production and sales of Penacolite resins used in the global tire industry as well as other industries. Our manufacturing locations and processes are certified under ISO 9001 quality metrics, ISO 140001 environmental metrics, and OHSAS 18001 safety metrics.  Many of our products are used extensively in devices such as smartphones, base stations, automotive radars & LIDAR,and advanced concentrated solar cells.  In a smartphone, our products will include or be used in the GPS chips, the display components and filters, the privacy film that you may purchase, the connectors to charge and attach your computers, and the chemistry used in the lithography to make the circuitry. Regarding EPI wafers, these are typically the foundation of semiconductors and use gallium arsine or nitride, and the combinations of the elements gallium, indium, aluminum, nitrogen, phosphorus or arsenic.  The term epitaxy (Greek; “epi” “above” and “taxis” “in ordered manner”) describes an ordered crystalline growth on a single-crystalline substrate.  Epitaxy is the only affordable method of high crystalline quality growth for many semiconductor materials. Our process involves the growth of crystals in a clean room environment of one material on the crystal face of another material.  This will include a tremendous amount of layers depending upon the end use needs of the EPI wafer.  A great deal of care and attention to detail is required.  If the wafers are not manufactured properly, or show any defects, they will not be suitable for their intended use.  We believe that through our products, we contribute positively to society by enhancing the lives of people around the world by helping them generate cheaper and reliable power, staying connected to each other, staying much safer in their everyday lives, and also share a few minutes of entertainment.