David B. Joyce — 8 Patents at Crystal Systems

David B. Joyce has been granted 8 US patents while listed as an inventor at Crystal Systems. The first was granted in 1984 and the most recent in January 2017. David B. Joyce ranks #600,572 of 4,157,543 US inventors in our database (top 14.4%). Patent records list David B. Joyce in Marblehead, MA, US.

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #	Title	Co-Inventors	Date
9546434	High-temperature process improvements using helium under regulated pressure	Frederick Schmid, John Brouillette, Daniel P. Betty, Ryan Philpott	2017-01-17
9377912	Mobile electronic device comprising a modified sapphire	John Q. Dumm, James M. Zahler	2016-06-28
8329133	Method and apparatus for refining metallurgical grade silicon to produce solar grade silicon	Frederick Schmid	2012-12-11
8177910	System and method for crystal growing	Frederick Schmid, Chandra P. Khattak	2012-05-15
7918936	System and method for crystal growing	Frederick Schmid, Chandra P. Khattak	2011-04-05
7344596	System and method for crystal growing	Frederick Schmid, Chandra P. Khattak	2008-03-18
6368403	Method and apparatus for purifying silicon	Frederick Schmid, Chandra P. Khattak	2002-04-09
4472610	Keyboards incorporating keys pivotable against biased detent means to operate electrical switches	Maurice D. Fuller	1984-09-18

David B. Joyce — 8 Patents

Issued Patents All Time

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