Inventor
PERKINS CHARLES
US9 patents
⚠️ This page may combine multiple inventors who share the name “PERKINS CHARLES”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
VARIAN INC
5 patentsUS7290439B2Nov 6, 2007
Methods and apparatus for leak detection by the accumulation method
VARIAN INC19 citations89
US7204127B2Apr 17, 2007
Method and apparatus for large leak testing
VARIAN INC10 citations80
US7320243B2Jan 22, 2008
Methods and apparatus for detection of large leaks in sealed articles
VARIAN INC7 citations70
US6835048B2Dec 28, 2004
Ion pump having secondary magnetic field
VARIAN INC12 citations65
US7500381B2Mar 10, 2009
Systems and methods for trace gas leak detection of large leaks at relatively high test pressures
VARIAN INC4 citations53