US Patent No: 4,767,706

Number of patents in Portfolio can not be more than 2000

Fixation of enzymes with bis-dithioesters

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Abstract

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Enzymes are fixed on carriers with a bis-dithioester capable of combining with the enzyme and with the carrier. The bis-dithioester has at each of its ends a group capable of reacting with an aimine function. The enzyme may be contacted with the bis-dithioester before the enzyme and carrier are combined. The carrier is an inorganic or organic solid.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
SOCIETE NATIONALE ELF AQUITAINECOURBEVOIE392

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Levesque, Guy 19 rue de l'Unite Epron, F-14610 Thaon, FR 7 56
Seris, Jean-Louis Jurancon, FR 10 114

Cited Art Landscape

Patent Info (Count) # Cites Year
 
SANYO CHEMICAL INDUSTRIES, LTD. (1)
4,367,309 Glycoprotein derivative compositions, process for producing the same and uses thereof as diagnostic reagents or hydrolytic catalysts 5 1979
 
TOYO JOZO KABUSHIKI KAISHA (1)
4,287,345 Polyfunctional disulfide compounds having S--S exchange reactivity 9 1980

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
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8,541,051 On-the fly coating of acid-releasing degradable material onto a particulate 0 2003
7,475,728 Treatment fluids and methods of use in subterranean formations 23 2004
7,413,017 Methods and compositions for inducing tip screenouts in frac-packing operations 28 2004
7,648,946 Methods of degrading filter cakes in subterranean formations 6 2004
7,553,800 In-situ filter cake degradation compositions and methods of use in subterranean formations 16 2004
7,506,689 Fracturing fluids comprising degradable diverting agents and methods of use in subterranean formations 43 2005
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7,547,665 Acidic treatment fluids comprising scleroglucan and/or diutan and associated methods 16 2005
7,662,753 Degradable surfactants and methods for use 2 2005
7,608,567 Degradable surfactants and methods for use 14 2005
7,640,985 Methods of directional drilling and forming kickoff plugs using self-degrading cement in subterranean well bores 0 2005
7,637,319 Kickoff plugs comprising a self-degrading cement in subterranean well bores 0 2005
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7,595,280 Delayed tackifying compositions and associated methods involving controlling particulate migration 12 2005
7,484,564 Delayed tackifying compositions and associated methods involving controlling particulate migration 25 2005
7,713,916 Orthoester-based surfactants and associated methods 0 2005
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7,431,088 Methods of controlled acidization in a wellbore 4 2006
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7,674,753 Treatment fluids and methods of forming degradable filter cakes comprising aliphatic polyester and their use in subterranean formations 0 2006
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8,329,621 Degradable particulates and associated methods 0 2007
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8,006,760 Clean fluid systems for partial monolayer fracturing 2 2008
7,906,464 Compositions and methods for the removal of oil-based filtercakes 0 2008
7,833,943 Microemulsifiers and methods of making and using same 5 2008
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7,960,314 Microemulsifiers and methods of making and using same 0 2010
 
AVENTIS PHARMACEUTICALS HOLDINGS INC. (1)
6,528,292 Derivatized polystyrene and other polymer supports for spectroscopic studies 0 1995
 
AVENTIS PHARMACEUTICALS PRODUCTS INC. (1)
6,391,980 Activated and conjugated polystyrene substrate 2 1995