Inventor
CRUMP DRUCE K
US43 patents
⚠️ This page may combine multiple inventors who share the name “CRUMP DRUCE K”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
DOW CHEMICAL CO
36 patentsUS5733858AMar 31, 1998
Succinic acid derivative degradable chelants, uses and compositions thererof
DOW CHEMICAL CO23 citations93
US5447575ASep 5, 1995
Degradable chelants having sulfonate groups, uses and compositions thereof
DOW CHEMICAL CO30 citations93
US5208369AMay 4, 1993
Degradable chelants having sulfonate groups, uses and compositions thereof
DOW CHEMICAL CO21 citations93
US5972868AOct 26, 1999
Method for controlling alkaline earth and transition metal scaling with 2-hydroxyethyl iminodiacetic acid
DOW CHEMICAL CO33 citations92
US5481018AJan 2, 1996
Amino nitrile intermediate for the preparation of alanine diacetic acid
DOW CHEMICAL CO31 citations92
US4560548ADec 24, 1985
Bone seeking Tc-99m complexes of phosphonate derivatives of bis(aminoalkyl)piperazine
DOW CHEMICAL CO44 citations92
US4872996AOct 10, 1989
Use of aminophosphonic acids to inhibit scale formation and corrosion caused by manganese in water systems
DOW CHEMICAL CO34 citations91
US5569443AOct 29, 1996
Method for removing hydrogen sulfide from a gas using polyamino disuccinic acid
DOW CHEMICAL CO17 citations82
US5389594AFeb 14, 1995
Degradable chelants having sulfonate groups, uses and compositions thereof
DOW CHEMICAL CO17 citations82
US4468252AAug 28, 1984
Set retarding additives for cement from aminomethylenephosphonic acid derivatives
DOW CHEMICAL CO20 citations82
US4466836AAug 21, 1984
Set retarding compounds for use in cement slurries
DOW CHEMICAL CO19 citations82
US4799995AJan 24, 1989
Scale inhibition formulations for kraft digesters
DOW CHEMICAL CO22 citations79
US5846925ADec 8, 1998
Succinic acid derivative degradable chelants, uses and compositions thereof
DOW CHEMICAL CO12 citations74
US5817613AOct 6, 1998
Amino nitrile intermediate for the preparation of 2-hydroxyethyl iminodiacetic acid
DOW CHEMICAL CO13 citations74
US5258141ANov 2, 1993
Degradable chelants having sulfonate groups, uses and compositions thereof
DOW CHEMICAL CO8 citations74
US5208363AMay 4, 1993
Preparation of aminonitriles
DOW CHEMICAL CO7 citations74
US4895600AJan 23, 1990
Asphalt compositions containing anti-stripping additives prepared from amines or polyamines and phosphonates
DOW CHEMICAL CO10 citations74
US4786329ANov 22, 1988
Asphalt compositions containing anti-stripping additives prepared from amines or polyamines and phosphonates
DOW CHEMICAL CO12 citations74
US4758635AJul 19, 1988
Polyamindoamine based metal ion control compound
DOW CHEMICAL CO15 citations74
US4680396AJul 14, 1987
Bis(aminoalkyl)piperazine derivatives and their use as metal ion control agents
DOW CHEMICAL CO8 citations74
US4500356AFeb 19, 1985
Methylenephosphonic acid derivatives of bis(aminoalkyl)piperazines as cement set retarding agents
DOW CHEMICAL CO15 citations74
US4500469AFeb 19, 1985
Metal ion control compounds based on norbornane
DOW CHEMICAL CO7 citations74
US4489203ADec 18, 1984
Polyumeric alkylene phosphoric acid piperazine derivatives as scale inhibitors
DOW CHEMICAL CO10 citations74
US4472200ASep 18, 1984
New additives for retarding setting of cement from methylenephosphonated aminohydrocarbylpiperazine-urea adducts
DOW CHEMICAL CO15 citations74
US4466835AAug 21, 1984
Cement compositions containing set retarders
DOW CHEMICAL CO12 citations74
US5098681AMar 24, 1992
Process for absorption of sulfur compounds from fluids
DOW CHEMICAL CO14 citations73
US4469663ASep 4, 1984
Scale control in flue gas desulfurization
DOW CHEMICAL CO13 citations69
US5726341AMar 10, 1998
Amine nitrile intermediate for the preparation of 2-hydroxyethyl iminodiacetic acid
DOW CHEMICAL CO3 citations63
US4770791ASep 13, 1988
Control of metal ions using bis(aminoalkyl) piperazine derivatives
DOW CHEMICAL CO6 citations63
US4568469AFeb 4, 1986
Use of methylene phosphonic acid compositions derived from aminohydrocarbyl piperazine-urea adducts to inhibit scale
DOW CHEMICAL CO2 citations63
US4540508ASep 10, 1985
Alkylene phosphonic acid scale inhibitor compositions
DOW CHEMICAL CO4 citations63
US4312815AJan 26, 1982
Preparation of a zinc chelate having improved stability
DOW CHEMICAL CO3 citations62
US6465690B1Oct 15, 2002
Process for the preparation of polyamino succinic acids and derivatives thereof
DOW CHEMICAL CO3 citations58
US5488130AJan 30, 1996
Amino nitrile intermediate for the preparation of 2-hydroxypropyl iminodiacetic acid
DOW CHEMICAL CO0 citations52
US4568468AFeb 4, 1986
Use of norbornane derived compounds as threshold agents
DOW CHEMICAL CO1 citations52
US4518777AMay 21, 1985
Methylene phosphonic acid scale inhibitor compositions derived from aminohydrocarcarbylpiperazine urea adducts
DOW CHEMICAL CO0 citations52
ISOTHERAPEUTICS GROUP LLC
3 patentsUS9687574B2Jun 27, 2017
Radioactive compositions and methods for their therapeutic use
ISOTHERAPEUTICS GROUP LLC2 citations72
US10918746B2Feb 16, 2021
Radioactive compositions and methods for their therapeutic use
ISOTHERAPEUTICS GROUP LLC0 citations62
US10583211B2Mar 10, 2020
Radioactive compositions and methods for their therapeutic use
ISOTHERAPEUTICS GROUP LLC0 citations51