Inventor
Douglas M. Stevens
Inventor
Holden, MA, US
Overview
Patents· 5 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G01Nprimary
G01NInvestigating or analysing materials by determining their chemical or physical properties43%
H01JElectric discharge tubes or discharge lamps29%
C01FCompounds of the metals beryllium, magnesium, aluminium, calcium, strontium, barium, radium, thorium, or of the rare-earth metals14%
Y10TTechnical subjects covered by former us classification14%
PatentTitleYear
10,768,151Techniques for display and processing of mass spectral data202010,732,157Techniques for display and processing of mass spectral data202010,386,333Performing chemical reactions and/or ionization during gas chromatography-mass spectrometry runs20199,903,845'Ionization of analyte molecules comprised in a flow of gas'20184,029,737'Redox treatment of alunite ore'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977Patents assigned to SOUTHWIRE CO (1)· patent assignee history
1977Based in Golden, CO, US· patent location history
2018–2020Patents assigned to WATERS TECHNOLOGIES CORP (3)· patent assignee history
2018–2020Based in Holden, MA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| WATERS TECHNOLOGIES CORP | 3 | 2018–2020 |
| SOUTHWIRE CO | 1 | 1977 |
Locations
| Location | Patents | Span |
|---|---|---|
| Holden, Massachusetts, US | 4 | 2018–2020 |
| Golden, CO, US | 1 | 1977 |