Inventor
David L. Johnson
Inventor
Glen Mills, PA, US
Overview
Patents· 45 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C10Gprimary
C10GCracking hydrocarbon oils14%
Y02PClimate change mitigation technologies in the production or processing of goods11%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry10%
C07CAcyclic or carbocyclic compounds10%
B01DSeparation5%
C01BNon-metallic elements5%
A61BDiagnosis4%
C09KMaterials for miscellaneous applications, not provided for elsewhere4%
G06QInformation and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposes4%
G07FCoin-freed or like apparatus4%
PatentTitleYear
10,173,946Apparatus and process for producing gasoline, olefins and aromatics from oxygenates20199,938,205Apparatus and process for producing gasoline, olefins and aromatics from oxygenates20188,981,171'Process for the purification of paraxylene'20158,571,697'Apparatus and method for double end manufacturing of components'20138,507,744'Process for the purification of paraxylene'20138,486,027'Bone-penetrating member for intraosseous infusion and aspiration devices'20138,313,713'Stabilizing a cuvette during measurement'20128,252,967'Process for the purification of paraxylene'20127,744,746'FCC catalyst stripper configuration'20107,347,840'Patch for locating a target zone for penetration'20087,119,239'Manufacture of xylenes using reformate'20067,040,143'Method and apparatus for testing surface characteristics of a material'20066,902,593'Separation device to remove fine particles'20056,761,726'Method and apparatus for the intraosseous introduction of a device such as an infusion tube'20046,642,426'Fluid-bed aromatics alkylation with staged injection of alkylating agents'2003RE038255'Method and apparatus for distributing currency'20036,222,087'Catalytic production of light olefins rich in propylene'2001RE037122'Method and apparatus for distributing currency'20016,027,704'Process for the reduction of SO.sub.2 from wet lime/limestone tailgas in power plant desulfurization processes'20005,989,336'Cement composition'19995,985,226'Method of recovering chlorine from a gas mixture'1999RE036365'Method and apparatus for distributing currency'19995,954,942'Catalytic cracking with delayed quench'19995,874,387'Method and cement-drilling fluid cement composition for cementing a wellbore'19995,866,517'Method and spacer fluid composition for displacing drilling fluid from a wellbore'19995,817,052'Apparatus for intraosseous infusion or aspiration'19985,789,352'Well completion spacer fluids and methods'19985,741,469'Process scheme for SO.sub.x removal from flue gases'19985,728,358'Sox sorbent regeneration'19985,567,406'Manufacturing clear potassium sulfite'19965,538,623'FCC catalyst stripping with vapor recycle'19965,531,884'FCC catalyst stripper'19965,477,038'Method and apparatus for distributing currency'19955,458,861'Desulfurizing a gas stream'19955,389,232'Riser cracking for maximum C3 and C4 olefin yields'19955,382,352'Conversion of NO.sub.x in FCC bubbling bed regenerator'19955,380,426'Active bed fluidized catalyst stripping'19955,372,706'FCC regeneration process with low NO.sub.x CO boiler'19945,345,389'Electronic controller for a glassware forming machine'19944,899,014'Upgrading propene-ethene mixtures in a turbulent fluidized catalyst bed reactor'19904,873,389'Conversion of light olefins to gasoline using low-temperature catalyst regeneration'19894,873,385'Single zone oligomerization of lower olefins to distillate under low severity in a fluid bed with tailored activity'19894,855,912'Method and apparatus for measurement of the thermal behavior of porous media'19894,189,568'Antibiotic purification process'19804,047,961'Cement composition'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1989–2001Patents assigned to MOBIL OIL CORP (13)· patent assignee history
1989–2001Based in Glen Mills, PA, US· patent location history
1990–2019Patents assigned to JOHNSON DAVID L (4)· patent assignee history
1995–2003Based in Woodside, CA, US· patent location history
1998–1999Patents assigned to ATLANTIC RICHFIELD CO (4)· patent assignee history
1998–2013Based in Burnaby, CA· patent location history
1998–1999Based in Dallas, TX, US· patent location history
2006–2015Patents assigned to EXXONMOBIL CHEM PATENTS INC (4)· patent assignee history
2012–2013Patents assigned to JOHNSON DAVID LEE (4)· patent assignee history
2012–2019Based in Doylestown, PA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MOBIL OIL CORP | 13 | 1989–2001 |
| ATLANTIC RICHFIELD CO | 4 | 1998–1999 |
| EXXONMOBIL CHEM PATENTS INC | 4 | 2006–2015 |
| JOHNSON DAVID Lself | 4 | 1990–2019 |
| JOHNSON DAVID LEEself | 4 | 2012–2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Glen Mills, Pennsylvania, US | 14 | 1989–2001 |
| Doylestown, Pennsylvania, US | 5 | 2012–2019 |
| Burnaby, CA | 4 | 1998–2013 |
| Woodside, California, US | 4 | 1995–2003 |
| Dallas, Texas, US | 4 | 1998–1999 |