Inventor

Reinhold J. Leyrer

Inventor

Ludwigshafen, DE

Overview

1983–2021

Patent span

Chemistry

Primary field (CPC C)

Patents· 56 as inventor

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

C08Fprimary

C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds16%

G03GElectrography11%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%

G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices8%

C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments8%

C11DDetergent compositions7%

C08LCompositions of macromolecular compounds5%

C09KMaterials for miscellaneous applications, not provided for elsewhere5%

C09DCoating compositions, e.g. paints, varnishes or lacquers5%

A61KPreparations for medical, dental or toiletry purposes3%

PatentTitleYear

10,920,001Process for obtaining a cationic polymer with an at least bimodal molecular weight distribution2021 10,745,494Cationic polymer with an at least bimodal molecular weight distribution2020 10,730,962Rheology modifier2020 9,200,242'Thickener comprising at least one cationic polymer'2015 9,163,103'Hydrophobically associating copolymers'2015 9,102,900'Inverse dispersion comprising a cationic polymer and a stabilizing agent'2015 8,865,639'Use of a copolymer as thickener in liquid detergents having lower graying tendency'2014 8,783,356'Hydrophobically associating copolymers'2014 8,524,649'Associative thickener dispersion'2013 8,492,497'Copolymers, their use as thickeners, and methods for their preparation'2013 8,362,180'Hydrophobically associating copolymers'2013 8,232,356'Method for producing a thickener dispersion'2012 8,013,085'Method for the production of an aqueous polymer dispersion'2011 7,776,237'Polymer dispersion with a colour effect'2010 7,767,748'Aqueous polymer dispersions containing amphiphilic block copolymers, method for producing said dispersions and the use thereof'2010 7,443,900'Laser gain medium for solid state dye lasers'2008 7,264,748'Aqueous mini-emulsions which are stable in storage and based on cholesteric mixtures'2007 7,214,421'Optical display elements based on aqueous polymer dispersions'2007 7,113,533'Amplifying medium for solid-state dye lasers'2006 6,964,993'Paper coating slip containing polyvinyl alcohol as a protective colloid'2005 6,911,054'Use of cationically modified, particle-shaped, hydrophobic polymers as addition agents in rinsing, care, detergent and cleaning products'2005 6,908,490'Use of cationically modified, particle-shaped, hydrophobic polymers as addition agents in textile rinsing or care products and as addition agents in detergents'2005 6,541,564'Preparation of copolymers of carbon monoxide and an olefinically unsaturated compound in an aqueous medium'2003 6,337,131'Core-shell particles and preparation and use thereof'2002 6,136,251'Process for producing pigment particles of defined shape and size'2000 5,798,147'Process for coating and printing substrates'1998 5,176,962'Methacrylate (co)polymers containing carbazolyl side groups and electropohotographic recording elements containing the said (co)polymers'1993 5,116,911'Methacrylate (co)polymers containing carbazolyl side groups and electrophotographic recording elements containing the said (co)polymers'1992 5,100,971'Preparation of carbazole-substituted polyacrylates or polymethacrylates, the products thus prepared and their use'1992 5,069,991'Panchromatic electrophotographic recording element containing multiple carrier-producing sensentizers'1991 4,939,068'Anodic oxidation of the surface of aluminum or aluminum alloys'1990 4,935,330'Photopolymerizable mixture, photosensitive recording element containing this mixture, and the production of lithographic printing plate using this photosensitive recording element'1990 4,935,332'Photosensitive element having an aluminum base and silane intermediate layer'1990 4,924,003'Pyrazoline compounds'1990 4,906,541'Electrophotographic recording element containing a naphtholactam dye sensitizer'1990 4,883,732'Method of forming printing plate using isoindolenine deratives'1989 4,880,718'Electrophotographic recording element with isoindolenine derivatives'1989 4,866,183'Preparation of hexaarylbisimidazoles'1989 4,857,438'Photochromic system and layers produced therewith'1989 4,789,622'Production of resist images, and a suitable dry film resist'1988 4,782,000'Electrophotographic recording elements with hydrolyzed silane layer'1988 4,770,976'Phenanthroimidazole compounds, their preparation, photopolymerizable coating and recording materials, and lithographic layers produced using these'1988 4,743,521'Electrophotographic material with mxiture of charge transport materials'1988 4,734,444'Curable mixtures containing N-sulfonylaminosulfonium salts as cationically active catalysts'1988 4,649,100'Production of resist images, and a suitable dry film resist'1987 4,640,960'Degradation of poly(diacetylenes)'1987 4,632,897'Photopolymerizable recording material suitable for the production of photoresist layers'1986 4,599,293'Toner transfer process for transferring and fixing a toner image by means of film'1986 4,579,806'Positive-working photosensitive recording materials'1986 4,565,771'Production of gravure printing plates having plastic printing layers'1986 4,517,270'Electrophotographic recording medium'1985 4,481,272'Layered electrophotographic recording medium comprising heterocyclic nitrogen containing organic dye compounds'1984 4,465,760'Production of relief images or resist images by a negative-working method'1984 4,456,679'Production of relief images or resist images by a positive-working method'1984 4,429,029'Organic electrophotographic recording medium'1984 4,419,427'Electrophotographic medium with perylene-3,4,9,10-tetracarboxylic acid N,N\'-bis-(2\',6\'-dichlorophenyl)-diimide'1983

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1983–2011Patents assigned to BASF AG (44)· patent assignee history

1983–2000Based in Ludwigshafen, DE· patent location history

2002–2011Based in Dannstadt, DE· patent location history

2010–2021Based in Dannstadt-Schauernheim, DE· patent location history

2012–2021Patents assigned to BASF SE (12)· patent assignee history

2012–2015Patents assigned to LEYRER REINHOLD J (6)· patent assignee history

2012–2015Patents assigned to SCHMIDT KATI (5)· patent assignee history

2013–2015Patents assigned to FOGEL YULIA (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
BASF AG	44	1983–2011
BASF SE	12	2012–2021
LEYRER REINHOLD Jself	6	2012–2015
SCHMIDT KATI	5	2012–2015
FOGEL YULIA	2	2013–2015

Locations

Location	Patents	Span
Ludwigshafen, DE	32	1983–2000
Dannstadt-Schauernheim, DE	13	2010–2021
Dannstadt, DE	11	2002–2011