LexDanaLexDanabeta
Inventor

Bowie G. Keefer

Inventor
Vancouver, CA

Overview

60→
Patents
1980–2020
Patent span
General tagging of new technological developments
Primary field (CPC Y)

Patents· 60 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

B01Dprimary
B01DSeparation25%
Y02CCapture, storage, sequestration or disposal of greenhouse gases [ghg]9%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution9%
Y02PClimate change mitigation technologies in the production or processing of goods9%
C01BNon-metallic elements8%
H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy6%
F02GHot gas or combustion-product positive-displacement engine plants4%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry3%
C10GCracking hydrocarbon oils3%
C10LFuels not otherwise provided for3%
PatentTitleYear
10,653,995Sorption enhanced methanation of biomass202010,190,066Method and system for biomass hydrogasification20199,394,171'Method and system for biomass hydrogasification'20168,674,153'Method of hydrogasification of biomass to methane with low depositable tars'20148,616,233'Rotary face seal with anti-crowning features'20138,541,637'Process and system for thermochemical conversion of biomass'20138,383,871'Method of hydrogasification of biomass to methane with low depositable tars'20138,015,808'Power plant with energy recovery from fuel storage'20117,902,114'Adsorbent coating compositions, laminates and adsorber elements'20117,758,988'System that includes a fuel cell and an oxygen gas delivery system'20107,687,044'Chemical reactor with pressure swing adsorption'20107,674,539'Systems and processes for providing hydrogen to fuel cells'20107,645,324'Engineered adsorbent structures for kinetic separation'20107,553,568'High efficiency load-following solid oxide fuel cell systems'20097,387,849'Hydrogen recycle for solid oxide fuel cell'2008RE040006'Flow regulated pressure swing adsorption system'20087,300,905'Methods for their manufacture of adsorbent'20077,285,350'Enhanced solid oxide fuel cell systems'20077,250,073'Life support oxygen concentrator'20077,250,150'Chemical reactor with pressure swing adsorption'20077,160,367'PSA with adsorbents sensitive to contaminants'20077,097,925'High temperature fuel cell power plant'20067,094,275'Modular pressure swing adsorption apparatus'20067,087,331'Energy efficient gas separation for fuel cells'20067,041,272'Systems and processes for providing hydrogen to fuel cells'20067,037,358'PSA with adsorbents sensitive to contaminants'20066,921,597'Electrical current generation system'20056,905,535'Gas separation with split stream centrifugal turbomachinery'20056,902,602'Gas separation by combined pressure swing and displacement purge'20056,866,950'Methods and apparatuses for gas separation by pressure swing adsorption with partial gas product feed to fuel cell power source'20056,840,985'Surge absorber flow regulation for modular pressure swing adsorption'20056,742,507'Feed composition modification for internal combustion engines'2004RE038493'Flow regulated pressure swing adsorption system'20046,692,626'Adsorbent laminate structures'20046,565,635'Layered manifold pressure swing adsorption device and method'20036,533,846'Modular pressure swing adsorption apparatus with clearance-type valve seals'20036,514,319'Life support oxygen concentrator'20036,514,318'Multistage system for separating gas by adsorption'20036,488,747'Pressure swing adsorption with axial or centrifugal compression machinery'20026,451,095'Modular pressure swing adsorption apparatus'20026,406,523'Rotary pressure swing adsorption apparatus'20026,398,853'Gas separation with split stream centrifugal turbomachinery'20026,176,897'High frequency pressure swing adsorption'20016,063,161'Flow regulated pressure swing adsorption system'20006,056,804'High frequency rotary pressure swing adsorption apparatus'20006,051,050'Modular pressure swing adsorption with energy recovery'20005,256,172'Thermally coupled pressure swing adsorption'19935,096,469'Adsorptive gas separator with inertial energy exchange'19925,082,473'Extraction and concentration of a gas component'19924,973,408'Reverse osmosis with free rotor booster pump'19904,968,329'Pressure swing adsorption for concentration of a gas component'19904,816,121'Gas phase chemical reactor'19894,801,308'Apparatus and process for pressure swing adsorption separation'19894,702,903'Method and apparatus for gas separation and synthesis'1987RE032144'Reverse osmosis method and apparatus'19864,434,056'Multi-cylinder reverse osmosis apparatus and method'19844,432,876'Reverse osmosis apparatus and method incorporating external fluid exchange'19844,288,326'Rotary shaft driven reverse osmosis method and apparatus'19814,230,564'Rotary reverse osmosis apparatus and method'19804,187,173'Reverse osmosis method and apparatus'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980–2016Patents assigned to KEEFER BOWIE (16)· patent assignee history
1980–2013Based in Vancouver, CA· patent location history
1980–1993Based in Vancouver, British Columbia, CA· patent location history
2002–2008Patents assigned to QUESTAIR TECHNOLOGIES INC (26)· patent assignee history
2005–2020Based in Galiano Island, CA· patent location history
2010–2011Patents assigned to XEBEC ADSORPTION INC (5)· patent assignee history
2011–2020Patents assigned to G4 INSIGHTS INC (6)· patent assignee history
2013–2016Patents assigned to BABICKI MATTHEW L (3)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
QUESTAIR TECHNOLOGIES INC262002–2008
KEEFER BOWIE161980–2016
G4 INSIGHTS INC62011–2020
XEBEC ADSORPTION INC52010–2011
BABICKI MATTHEW L32013–2016
Locations
LocationPatentsSpan
Vancouver, CA411980–2013
Galiano Island, CA142005–2020
Vancouver, British Columbia, CA51980–1993