User:IDEXX/Leo C. Rogers

Leo Crocker Rogers is an American physicist, writer and metaphysicist well known in the polysilicon industry for his work developing a chemical system.....

Polycrystalline Silicon
In 1962, Mr. Rogers was an inventor of environmentally-contained polycrystalline silicon manufacturing technology. Today, he remains a unique and independent source of advanced chlorosilane chemistry and thermal chlorosilane deposition. Leo C. Rogers is now the president of P.S.T. and was the polycrystalline silicon Project Manager for the Motorola Semiconductor Operation located in Phoenix, Arizona. Mr. Rogers designed, engineered, constructed, and operated two polycrystalline silicon plants for Motorola. The designs were of his technology. The designs were used by Motorola without charge by Mr. Rogers as he was a full time salaried employee of Motorola during the design, engineering, construction, and operation of the two plants.

Subsequent to leaving Motorola, and with no objection from Motorola, Mr. Rogers formed Great Western Silicon Company which designed and constructed a semiconductor grade polycrystalline plant for Applied Materials and Fairchild Semiconductor. In the early 1980s General Electric purchased GWS. Mr. Rogers and Mr. Alfred Heitz, his partner, then formed P.S.T.

P.S.T. has conducted business with Jet Propulsion Laboratories; Strategies Unlimited; Midwest Research; U.S. Department of Defense; U.S. Department of Energy; Defense Enterprise Fund; Monsanto; Motorola; Fairchild Semiconductor; Applied Materials; Allied Chemical; Matheson Chemical; Agencies of China; Heraus; Rhone Poulenc; Mettur Chemical; United Nations; Kanematsu Semiconductor; Osaka Titanium; Tokoyama Soda, National Silicon of India; SRI International; Topsil; Carborundum; Chiyoda; Instituto De Pesquisas Technologicas; Elkem; Osaka Titanium; Zaporozhye Titanium and Magnesium; K-26/Atomic City of Krasnoyarsk, Siberia.

P.S.T. has conducted business in: Germany, France, Italy, Japan, Brazil, Canada, Norway, Denmark, Czech Republic, Ukraine, Russia, U.S.A.

The secrecy of technical information is paramount in the polycrystalline silicon manufacturing business. It is easier to tour a nuclear power plant than a polycrystalline silicon plant. To this end, patents are often disguised, set aside, or never filed. Over the years, Mr. Rogers= patentable inventions have followed this mantra. However, here are some of his patentable concepts and their topics of technology.

1.	Polysilicon on multiple filaments 2.	Variable expansion of Rogers-Heitz and Siemens systems 3.	Semiconductor process #3345216 4.	High purity silicon #3679470 5.	Double ring poly silicon process #4681652 6.	Productive slim rod heaters 7.	Method to grow poly silicon in non-Siemens process 8.	Dry Cleaning Polysilicon 9.	Carrier lifetime measuring method #3745454

In addition to the above, P.S.T. has five patents pending at this time.

1. Method and Apparatus for the manufacture of a solid from a vapor 2. Method to Remove Core from Solid Deposited on Core 3. Method to grow a Solid from a Vapor on a wire, solid rod, or hollow rod 4. Method to clean solid rods grown on a core material 5. Apparatus for the manufacturing of a solid from vapor phase

Books and Articles
Leo C. Rogers is the sole author of the ”Polycrystalline Silicon” chapter in The Handbook of Semiconductor Silicon Technology. Other publications include: The International Symposium on Apllications of Solar and Renewable Energy - Alternative Method to Produce The Silicon Single Crystal, The Journal of Advancing Technology - Global Ethics are Determined by Technology, The Educational Promise Beyond Technology, and Vision of a New Educational Paradigm; Electronics West; Photovoltaic International; The international publication of the Christian Science Monitor, the Christian Science Sentinel and the Christian Science Herald; "Open Doors" in Ukraine; a personal publication "Youthful Insights". He is published in German, Portuguese, Japanese, Norwegian, English, Braille, and audio books. Recent books published include; Principled Economics, Brain War, Black Holes Understood and The Cloak of The Lion.