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John A. Smith — 19 Patents

MIMks Instruments: 13 patents #20 of 442Top 5%
MIT: 2 patents #2,550 of 9,367Top 30%
BLBritish Technology Group Limited: 1 patents #139 of 501Top 30%
NDNational Research Development: 1 patents #307 of 1,071Top 30%
Overall (All Time): #229,345 of 4,157,543Top 6%
19 Patents All Time
John A. Smith has been granted 19 US patents while listed as an inventor at Mks Instruments. The first was granted in 1989 and the most recent in July 2024. John A. Smith ranks #229,345 of 4,157,543 US inventors in our database (top 5.5%). Patent records list John A. Smith in London, NH, GB.

Issued Patents All Time

Showing 1–19 of 19 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12023614 Portable air filter cleaning devices and methods of use — 2024-07-02
11541339 Portable air filter cleaning devices and methods of use — 2023-01-03
8779322 Method and apparatus for processing metal bearing gases William M. Holber, Xing Chen, Donald K. Smith 2014-07-15 $3,307,000
8704171 Chemical ionization reaction or proton transfer reaction mass spectrometry Timothy R. Robinson, Mark Attwood, Xing Chen, William M. Holber, Mark Philip Longson +2 more 2014-04-22 $3,319,000
8633782 Radio frequency power delivery system Siddharth P. Nagarkatti, Michael Kishinevsky, Ali Shajii, Timothy E. Kalvaitis, William McKinney +2 more 2014-01-21 $6,839,000
8334505 Chemical ionization reaction or proton transfer reaction mass spectrometry Timothy R. Robinson, Mark Attwood, Xing Chen, William M. Holber, Mark Philip Longson +2 more 2012-12-18 $2,237,000
8124906 Method and apparatus for processing metal bearing gases William M. Holber, Xing Chen, Donald K. Smith 2012-02-28 $10,725,000
8003935 Chemical ionization reaction or proton transfer reaction mass spectrometry with a quadrupole mass spectrometer Timothy R. Robinson, Mark Attwood, Xing Chen, William M. Holber, Mark Philip Longson +2 more 2011-08-23 $4,072,000
8003936 Chemical ionization reaction or proton transfer reaction mass spectrometry with a time-of-flight mass spectrometer Timothy R. Robinson, Mark Attwood, Xing Chen, William M. Holber, Mark Philip Longson +2 more 2011-08-23 $4,072,000
7764140 Radio frequency power delivery system Siddharth P. Nagarkatti, Michael Kishinevsky, Ali Shajii, Timothy E. Kalvaitis, William McKinney +3 more 2010-07-27 $8,034,000
7621290 Gas delivery method and system including a flow ratio controller using antisymmetric optimal control Junhua Ding, Kaveh Zarkar 2009-11-24 $2,330,000
7569790 Method and apparatus for processing metal bearing gases William M. Holber, Xing Chen, Donald K. Smith 2009-08-04 $9,411,000
6948508 Apparatus and method for self-calibration of mass flow controller Ali Shajii, Nicholas Kottenstette, Jesse E. Ambrosina 2005-09-27 $3,449,000
6857323 Two phase flow sensor using tomography techniques Ali Shajii, Siddharth P. Nagarkatti 2005-02-22 $10,758,000
6813943 Method and apparatus for conditioning a gas flow to improve a rate of pressure change measurement Ali Shajii 2004-11-09 $9,246,000
6610428 Controlled conversion of metal oxyfluorides into superconducting oxides Michael Cima, Neville Sonnenberg 2003-08-26
6172009 Controlled conversion of metal oxyfluorides into superconducting oxides Michael J. Cima, Neville Sonnenberg 2001-01-09
5500591 Methods and apparatus for detecting substances containing nuclei of a first and second kind Julian D. Shaw 1996-03-19
4887034 Methods and apparatus for detecting certain compounds — 1989-12-12

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Lei S. Qi19