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Inventor

David B. R. Johnston

Inventor
Warren, NJ, US

Overview

50→
Patents
1976–2020
Patent span
Chemistry
Primary field (CPC C)

Patents· 50 as inventor

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

C07Dprimary
C07DHeterocyclic compounds28%
C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium11%
C07CAcyclic or carbocyclic compounds8%
A01NPreservation of bodies of humans or animals or plants or parts thereof7%
A61PSpecific therapeutic activity of chemical compounds or medicinal preparations6%
C07JSteroids5%
A61KPreparations for medical, dental or toiletry purposes4%
Y02PClimate change mitigation technologies in the production or processing of goods4%
A01GHorticulture3%
A23LFoods, foodstuffs or non-alcoholic beverages, not otherwise provided for3%
PatentTitleYear
10,595,551Insoluble biomass gel (IBG) and methods of preparing202010,414,952Bio-fiber gum hydrolysates and processes of producing20199,777,243'Methods for obtaining corn oil from milled corn germ'20179,434,788'Bio-based fiber gums (BFGs) and processes for producing BFGs'20167,650,304'Solicitation to web marketing loop process'2010D0558278'Water gun'2007D0557357'Water gun'2007D0557356'Water gun'20076,899,910'Processes for recovery of corn germ and optionally corn coarse fiber (pericarp)'20056,566,125'Use of enzymes to reduce steep time and SO2 requirements in a maize wet-milling process'20036,063,796'Somatostatin agonists'20005,735,635'Gravity feed watering system for plants'19985,652,235'Method of using spiro piperidines to promote the release of growth hormone'19975,605,008'Plant shelter'19975,578,593'Spiro piperidines and homologs promote release of growth hormone'19965,536,716'Spiro piperidines and homologs which promote release of growth hormone'19965,398,443'Windowed shelter for plants'19955,389,660'Substituted imidazo-fused 5-membered ring heterocycles as angiotensin II antagonists'19955,164,407'Substituted imidazo-fused 5-membered ring heterocycles and their use as angiotensin II antagonsists'19925,157,040'Substituted quinolines as angiotensin II antagonists'19925,057,517'Piperazinyl derivatives of purines and isosteres thereof as hypoglycemic agents'19914,997,936'2-carbamimidoyl-6-substituted-1-carbadethiapen-2-em-3-carboxylic acids'19914,992,542'2-substituted-6-carbadethiapen-2-em-3-carboxylic acids'19914,605,517'Method of preparing steroid compounds of controlled particle size'19864,518,599'2-Amino-3-cyano-5-halo-6-(substituted)pyrazine'19854,517,186'2-Amino-3,5-dicyano-6-(substituted)pyrazine antimicrobial compounds'19854,512,991'3-Acyl-2-amino-5-halo-6-(substituted)pyrazine antimicrobial compounds'19854,507,299'N-[2-amino-5-halo-6-(substituted)-3-pyrazinyl)-methylene]amine antimicrobial compounds'19854,481,202'2-Amino-3-carboxylate-5-halo-6-(substituted)pyrazine antimicrobial compounds'19844,442,096'2-(Substituted)amino-3-cyano-5-halo-6-(substituted)-pyrazine antimicrobial compounds, compositions and use'19844,442,097'3-Acyl-2-(substituted) amino-5-halo-6-(substituted) pyrazine antimicrobial compounds, compositions and use'19844,442,095'N-[(5-Halo-2,6-(substituted)pyrazinyl)methylene]amine antimicrobial compounds, compositions and use'19844,390,693'Cephalosporin compounds'19834,377,584'4-Aza-17.beta.-substituted-5.alpha.-androstan-3-one-reductase inhibitors'19834,348,320'Substituted azetidiones'19824,347,367'3-Substituted-6-(1\'-hydroxyethyl)-7-oxo-1-azabicyc lo[3.2.0]-hept-2-ene-2-carboxylic acid'19824,347,368'3 -Substituted-6-substituted-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxyl ic acid'19824,296,236'7-(or 6-) Substituted-7-(or 6-)acylimino cephalosporin (or penicillin) compounds'19814,281,002'3-(2-Aminoethylthio)-6-amido-7-oxo-1-azabicyc lo(3.2.0)-hept-2-ene-2-carboxylic acid'19814,277,482'3-Substituted thio-6-amido-7-oxo-1-azabicyclo[3.2.0]-hept-2-ene-2-carboxylic acid s-oxides'19814,269,873'2-, 5-, and 6-Substituted-1-carbadethiapen-2-em-3-carboxylic acids'19814,264,621'5-Substituted-3 -(2-aminoethylthio)-6-(1-hydroxyethyl)-7-oxo-1-azabicyclo[3.2.0]hept-2-en e-2-carboxylic acid'19814,255,423'Cephalosporin compounds'19814,234,596'3-(2-Aminoethyl thio)-6-(1-hydroxyethyl)-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid'19804,224,336'3-(2-Aminoethylthio)-6-amido-7-oxo-1-azabicyclo[3.2.0]- hept-2-ene-2-carboxylic acid'19804,220,775'Preparation of 4-aza-17-substituted-5.alpha.-androstan-3-ones useful as 5.alpha.-reductase inhibitors'19804,218,463'3-Substituted thio-6-amido-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid'19804,191,759'N-substituted-17.beta.-carbamoylandrost-4-en-3-one 5.alpha. reductase inhibitors'19804,179,453'Process for preparing 17.beta.-carboxy-5-androsten-3-ones'19793,943,153'(-)(Cis-1,2-epoxy propyl)phosphonic acid amides'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–2000Patents assigned to MERCK & CO INC (36)· patent assignee history
1976–2000Based in Warren, NJ, US· patent location history
1995–1998Patents assigned to NORTHERN TIER GARDENS CORP (3)· patent assignee history
1995–1998Based in Fairport, NY, US· patent location history
2003–2020Patents assigned to US AGRICULTURE (5)· patent assignee history
2003–2005Patents assigned to UNIV ILLINOIS (2)· patent assignee history
2003–2020Based in Wyndmoor, PA, US· patent location history
2007Patents assigned to JAKKS PACIFIC INC (2)· patent assignee history
2007Based in East Haddam, CT, US· patent location history
2010Based in Richmond, VA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MERCK & CO INC361976–2000
US AGRICULTURE52003–2020
NORTHERN TIER GARDENS CORP31995–1998
JAKKS PACIFIC INC22007
UNIV ILLINOIS22003–2005
Locations
LocationPatentsSpan
Warren, New Jersey, US361976–2000
Wyndmoor, Pennsylvania, US62003–2020
East Haddam, CT, US32007
Fairport, New York, US31995–1998
Richmond, Virginia, US12010