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Class Information
Number: 528/277
Name: Synthetic resins or natural rubbers -- part of the class 520 series > Synthetic resins (class 520, subclass 1) > From carboxylic acid or derivative thereof > From di- or higher ester of a polycarboxylic acid as sole reactant, or from a polycarboxylic acid or derivative with a compound containing two or more hydroxyl groups or salts thereof > Polymerizing in the presence of a specified material other than reactant > Material contains a metal atom > Material contains a transition metal atom
Description: Subject matter wherein the specified material contains at least one atom of a transition metal.

Sub-classes under this class:

Class Number Class Name Patents
528/279 Material contains a group ivb metal atom (ti, zr, hf) 402
528/280 Material contains a group viii metal atom (fe, co, ni, ru, rh, pd, os, ir, pt) 163
528/278 Metal atom has atomic number of 57-71, or 89 and higher 25

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8685566 Process to induce polymerization of an organic electronically conductive polymer Apr. 1, 2014
8563650 Method for producing resin dispersions and resin particles Oct. 22, 2013
8546514 Continuous process for manufacturing aliphatic polycarbonates from carbon dioxide and epoxides Oct. 1, 2013
8304502 Copolymer coordination compound comprising heterogeneous complexes and gel using the same Nov. 6, 2012
8252888 Process for continuous preparation of high molecular weight polyesters by esterification of dicarboxylic acids and/or transesterification of dicarboxylic acids with diols and/or mixtures there Aug. 28, 2012
8110609 Copolyetheresters derived from polyethylene terephthalate Feb. 7, 2012
7923526 Sulfopolyesters having improved clarity in water-dispersible formulations and products made therefrom Apr. 12, 2011
7745368 Non-precipitating alkali/alkaline earth metal and aluminum compositions made with organic hydroxyacids Jun. 29, 2010
7527809 Polyhydroxyalkanoate-containing magnetic structure, and manufacturing method and use thereof May. 5, 2009
RE40571 Catalyst for polyester production, process for producing polyester using the catalyst, polyester obtained by the process, and uses of the polyester Nov. 11, 2008
7387863 Crystalline polyester for toner Jun. 17, 2008
7335719 Polyester based on poly(trimethylene terephthalate) Feb. 26, 2008
7317069 Aliphatic polyester and process for producing the same Jan. 8, 2008
7205357 Polyester resin composition for toner Apr. 17, 2007
7199212 Polymerization catalyst for polyesters, polyesters produced with the same and process for producing polyesters Apr. 3, 2007
7144614 Polyester polymerization catalyst, polyester produced by using the same, and process for producing polyester Dec. 5, 2006
7129301 Method for preparing a biodegradable copolyester Oct. 31, 2006
7129317 Slow-crystallizing polyester resins Oct. 31, 2006
7049390 Poly(1,3-propylene-co-1,4:3,6-dianhydro-D-sorbitol terephthalate) and manufacturing process May. 23, 2006
7026035 Laminated film for optical use Apr. 11, 2006
6998462 Polyester process Feb. 14, 2006
6998456 pH-sensitive methacrylic copolymers and the production thereof Feb. 14, 2006
6733873 Polyester film as support for dry film resist May. 11, 2004
6706396 Processes for producing very low IV polyester resin Mar. 16, 2004
6667383 Polyester resin and process for its production Dec. 23, 2003
6657036 Polycondensation resins and polyaddition resins produced by heterogeneous catalysis Dec. 2, 2003
6582818 Polyesters having a controlled melting point and fibers formed therefrom Jun. 24, 2003
6509436 Oxygen scavenging condensation copolymers for bottles and packaging articles Jan. 21, 2003
6500915 Polyester resin and its production process Dec. 31, 2002
6472500 Crystalline polyester resins and processes for their preparation Oct. 29, 2002
6437088 Process for producing polyester with coated titanium dioxide Aug. 20, 2002
6380348 Polyester polycondensation with lithium titanyl oxalate catalyst Apr. 30, 2002
6346070 Catalyst for polyester production, process for producing polyester using the catalyst, polyester obtained by the process, and uses of the polyester Feb. 12, 2002
6316584 Method for producing polyesters and copolyesters Nov. 13, 2001
6313235 Method for preparing polypropylene terephthalate/polyethylene terephtalate copolyester Nov. 6, 2001
6291122 Polyesters Sep. 18, 2001
6180747 Polyesters Jan. 30, 2001
6040417 Process for preparing polyethylene naphthalate based polymers Mar. 21, 2000
6025309 Polymeric acetals of hydroxycarboxylic acids and their derivatives, and a process for their preparation Feb. 15, 2000
5993958 Method of manufacturing a polyester-series photographic support Nov. 30, 1999
5977269 Polyester/vinyl dioxolane based coating compositions Nov. 2, 1999
5872204 Poly(1,3-propylene therephthalate) Feb. 16, 1999
5851612 Container formed from copolyester composition, copolyester composition therefor and method of producing the same Dec. 22, 1998
5852164 Polyester, process for producing the same and molding product therefrom Dec. 22, 1998
5780151 Radiation crosslinkable branched polyester compositions which are water-dispersible and processes Jul. 14, 1998
5739261 Preparation of oxysulfonylated polyesters Apr. 14, 1998
5672676 Polyesteramides with high heat deflection temperatures Sep. 30, 1997
5654380 Aliphatic polyester carbonate and process for producing the same Aug. 5, 1997
5623047 Catalytic compositions for the preparation of poly(ethylene terephthalate) with improved color Apr. 22, 1997
5608032 Catalytic compositions for the proparation of poly(ethylene terephthalate) with attenuated yellow color Mar. 4, 1997

1 2 3

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