CALGON CORPORATION
Patent Owner
Stats
- 6 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Oct 03, 2000 most recent publication
Details
- 6 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 2,201 Total Citation Count
- May 05, 1978 Earliest Filing
- 168 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
Intl Class
Technology
Matters
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Top Patents (by citation)
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Recent Publications
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Recent Patents
Patent #
Title
Filing Date
Issue Date
Intl Class
6090832 Process for making antimicrobial agents in aqueous dispersion form containing 2-(4-thiazolyl)-benzimidazole alone or in combination with 1,2-dibromo-2,4-dicyanobutaneJul 31, 95Jul 18, 00[A01N]
5985934 Synergistic antimicrobial composition of 2,4,4'-trichloro-2'-hydroxydiphenyl ether and 1,2-dibromo-2,4-dicyanobutaneApr 22, 96Nov 16, 99[A01N]
5700834 Synergistic antimicrobial composition of 1,2-dibromo-2,4-dicyanobutaneand alkylguanidine compoundsAug 31, 95Dec 23, 97[A01N]
5641808 Synergistic antimicrobial composition of 1,2-dibromo-2,4-dicyanobutane and esters of parahydroxybenzoic acidSep 01, 95Jun 24, 97[A01N]
5454954 Scale control in metal mining circuits using polyether polyamino methylene phosphonatesNov 02, 94Oct 03, 95[C02F]
5444088 Synergistic anti-microbial compositions comprising 2-bromo-2-(bromomethyl)-glutaronitrile and 2-bromo-2-nitro-propane-1,3-diolOct 05, 93Aug 22, 95[A01N]
Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
6126837 Method for removing suspended particles using mannich-derived polyethersExpiredFeb 12, 99Oct 03, 00[C02F]
6069142 Synergistic antimicrobial combination of 4,5-dichloro-2-N-octyl-4-isothiazolin-3-one and a mixture of a chlorinated isocyanurate and a bromide compound and methods of using sameExpiredDec 23, 98May 30, 00[A01N]
5772913 Aqueous system containing a synergistic combination for scale controlExpiredSep 24, 96Jun 30, 98[C02F]
5746947 Alkylbenzotriazole compositions and the use thereof as copper and copper alloy corrosion inhibitorsExpiredJun 20, 90May 05, 98[C23F]
5747342 Methods and apparatus for monitoring and controlling PH phosphate and sodium to phosphate ratio in boiler systems operating with captive alkalinityExpiredSep 22, 97May 05, 98[G01N]
5725780 Method for using novel high solids polymer compositions as flocculation aidsExpiredNov 25, 96Mar 10, 98[C02F]
5709814 Aqueous system containing a synergistic phosphonate scale control combinationExpiredOct 06, 95Jan 20, 98[C02F]
5702634 Aqueous system containing a synergistic combination including polyether polyamino methylene phosphates for controlling calcium carbonate and calcium phosphate scaleExpiredOct 06, 95Dec 30, 97[C02F]
5684048 Synergistic antimicrobial composition of N-decyl-N-isononyl-N,N-dimethyl ammonium chloride and 2-(decylthio) ethanamineExpiredMay 02, 96Nov 04, 97[A01N]
5677345 Synergistic antimicrobial composition of N-?(dichlorofluoromethyl)thio!-N',N'-dimethyl-N-phenylsulfamide and alkylguanidine compoundsExpiredMar 29, 96Oct 14, 97[A01N]
5663206 Synergistic antimicrobial composition of N-decyl-N-isononyl-N,N-dimethyl ammonium chloride and alkylguanidine compoundsExpiredMay 02, 96Sep 02, 97[A01N]
5656670 Synergistic antimicrobial composition of N-decy-N-isononyl-N,N-dimethyl ammonium chloride and 2-bromo-2-nitropropane-1,3-diolExpiredMay 02, 96Aug 12, 97[A01N]
5589525 Process for preparing novel high solids non-aqueous polymer compositionsExpiredSep 30, 94Dec 31, 96[C08L]
5567277 Cellulosic, modified lignin and cationic polymer composition and process for making improved paper or paperboardExpiredDec 04, 95Oct 22, 96[D21H]
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