Assignee
DONLAR CORP
US48 patents
Top patents by PatentIndex Score
US5296578AMar 22, 1994
Production of polysuccinimide and polyaspartic acid from maleic anhydride and ammonia
DONLAR CORP68 citations96
US5219952AJun 15, 1993
Production of high molecular weight polysuccinimide and high molecular weight polyaspartic acid from maleic anhydride and ammonia
DONLAR CORP84 citations96
US5612384AMar 18, 1997
Superabsorbing polymeric networks
DONLAR CORP44 citations95
US5284512AFeb 8, 1994
Polyaspartic acid and its salts for dispersing suspended solids
DONLAR CORP66 citations95
US5221733AJun 22, 1993
Manufacture of polyaspartic acids
DONLAR CORP70 citations95
US5152902AOct 6, 1992
Polyaspartic acid as a calcium carbonate and a calcium phosphate inhibitor
DONLAR CORP77 citations95
US5116513AMay 26, 1992
Polyaspartic acid as a calcium sulfate and a barium sulfate inhibitor
DONLAR CORP64 citations95
US5661103AAug 26, 1997
Seed treatment composition and method
DONLAR CORP84 citations94
US5593947AJan 14, 1997
Method for more efficient uptake of plant growth nutrients
DONLAR CORP63 citations94
US5350735ASep 27, 1994
Composition and method for enhanced fertilizer uptake by plants
DONLAR CORP49 citations94
US5552516ASep 3, 1996
Soluble, crosslinked polyaspartates
DONLAR CORP25 citations92
US5508434AApr 16, 1996
Production of a polysuccinimide and derivatives thereof in the presence of a sulfur-containing dehydrating agent
DONLAR CORP29 citations92
US5478919ADec 26, 1995
Aspartic acid copolymers and their preparation
DONLAR CORP41 citations92
US5373088ADec 13, 1994
Production of polyaspartic acid from maleic acid and ammonia
DONLAR CORP24 citations92
US6620338B2Sep 16, 2003
Composition for inhibition of metal corrosion
DONLAR CORP20 citations91
US6447717B1Sep 10, 2002
Composition and method for inhibition of metal corrosion
DONLAR CORP33 citations91
US5998492ADec 7, 1999
Super-absorbing polymeric networks
DONLAR CORP23 citations91
US5935909AAug 10, 1999
Treatment of tree seedlings to enhance survival rate
DONLAR CORP27 citations91
US5861356AJan 19, 1999
Method and composition for enhanced plant productivity comprising fertilizer and cross-linked polyamino acid
DONLAR CORP39 citations91
US5854177ADec 29, 1998
Method for enhanced hydroponic plant productivity with polymeric acids
DONLAR CORP19 citations91
US5814582ASep 29, 1998
Method for enhanced plant productivity
DONLAR CORP24 citations91
US5783523AJul 21, 1998
Method and composition for enhanced hydroponic plant productivity with polyamino acids
DONLAR CORP21 citations91
US5373086ADec 13, 1994
Polyaspartic acid having more than 50% β form and less that 50% α form
DONLAR CORP27 citations91
US5315010AMay 24, 1994
Polyaspartic acid manufacture
DONLAR CORP24 citations91
US5998491ADec 7, 1999
Super-absorbing polymeric networks
DONLAR CORP21 citations90
US6277302B1Aug 21, 2001
Inhibition of metal corrosion
DONLAR CORP32 citations89
US5580840ADec 3, 1996
Method and composition for preservation of cut flowers
DONLAR CORP23 citations89
US5607623AMar 4, 1997
Inhibition of carbon dioxide corrosion of metals
DONLAR CORP18 citations83
US6197897B1Mar 6, 2001
Production of succinimide copolymers in cyclic carbonate solvent
DONLAR CORP13 citations81
US5521257AMay 28, 1996
Hydrolysis of polysuccinimide to produce low-color polyaspartic acid and salts thereof
DONLAR CORP16 citations74
US5466779ANov 14, 1995
Production of polysuccinimide
DONLAR CORP14 citations74
US5939518AAug 17, 1999
Polyaspartate (salt) by polymerizing aspartic acid and hydrolyzing
DONLAR CORP6 citations73
USRE36234EJun 22, 1999
Aspartic acid copolymers and their preparation
DONLAR CORP8 citations73
US5847013ADec 8, 1998
Superabsorbing polymeric networks
DONLAR CORP11 citations73
US5827512AOct 27, 1998
Method for the treatment of bronchial asthma and like hypersensitivity diseases by administration of anionic polymers
DONLAR CORP14 citations73
US5756595AMay 26, 1998
Production of polysuccinimide in cyclic carbonate solvent
DONLAR CORP7 citations73
US5939522AAug 17, 1999
Production of polysuccinimide and polyaspartate in thioether solvents
DONLAR CORP14 citations72
US5709890AJan 20, 1998
Polyaspartic acid and its analogues in combination with insecticides
DONLAR CORP9 citations72
US5646133AJul 8, 1997
Polyaspartic acid and its analogues in combination with insecticides
DONLAR CORP12 citations72
US5635447AJun 3, 1997
Polyorganic acids and their analogues to enhance herbicide effectiveness
DONLAR CORP9 citations72
US5391764AFeb 21, 1995
Polyaspartic acid manufacture
DONLAR CORP14 citations69
US6399715B2Jun 4, 2002
Solution polymerizing aspartic acid and monomer to form succinimide copolymer
DONLAR CORP2 citations62
US6005069ADec 21, 1999
Production of polysuccinimide and derivatives thereof in a sulfur-containing solvent
DONLAR CORP2 citations62
US5939517AAug 17, 1999
Production of succinimide copolymers in cyclic carbonate solvent
DONLAR CORP2 citations62
US5491213AFeb 13, 1996
Production of polysuccinimide
DONLAR CORP6 citations62
US5872285AFeb 16, 1999
Production of D,L-aspartic acid
DONLAR CORP2 citations60
US5681920AOct 28, 1997
Process for production of a polysuccinimide and derivatives thereof
DONLAR CORP4 citations59
US5907057AMay 25, 1999
Production of D,L-aspartic acid
DONLAR CORP0 citations50