ASHBROOK SIMON-HARTLEY OPERATIONS, LP

Patent Owner

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B01D SEPARATION 1133
 
  
 
B01F MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING 141
 
  
 
C02F TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE 154

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5480593 Subterranean air lift diffuser assemblyNov 18, 93Jan 02, 96[B01F]
5133872 Method and apparatus for controlling throughput in a beltpressJan 31, 91Jul 28, 92[C02F, B01D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7282144 Semi-submersible floating decanters and methods of using sameExpiredFeb 26, 04Oct 16, 07[B01D]
6790351 Vertical filterExpiredSep 17, 03Sep 14, 04[B01D]
6641737 Vertical filterExpiredSep 09, 02Nov 04, 03[B01D]
6517712 Descending bed filterExpiredSep 27, 01Feb 11, 03[B01D]
6454102 Belt press with adjustable inlet guideExpiredMar 28, 01Sep 24, 02[B01D]
6319413 Method of filtering liquid using a vertical filterExpiredApr 20, 00Nov 20, 01[B01D]
5865997 Scraper blade assemblyExpiredApr 16, 97Feb 02, 99[B01D]
5730886 Continuous self-cleaning filtration unitExpiredNov 13, 96Mar 24, 98[B01D]
5582722 Continuous self-cleaning filtration unitExpiredDec 13, 94Dec 10, 96[B01D]
5076827 Method and apparatus for composting using improved charging and discharging sequenceExpiredOct 30, 89Dec 31, 91[C05F]
4917832 Air lift diffuserExpiredFeb 10, 89Apr 17, 90[B01F]
4891142 Moving bed filtration apparatus and methodExpiredSep 21, 88Jan 02, 90[B01D]
4836100 Apparatus for regulating feed thickness in a belt pressExpiredNov 17, 87Jun 06, 89[B30B, B01D]
4731188 Adjustable ramp for dewatering deviceExpiredApr 03, 86Mar 15, 88[B01D]
4717515 Apparatus for dispersing fluids in liquidsExpiredSep 18, 86Jan 05, 88[B01F]
4557879 Gas diffuser with indefinite life and mixed bubble size capacityExpiredSep 24, 84Dec 10, 85[B01F]

Top Inventors for This Owner

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