I. KRUGER INC.
Patent Owner
Stats
- 8 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Feb 17, 2015 most recent publication
Details
- 8 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 774 Total Citation Count
- Oct 09, 1979 Earliest Filing
- 15 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
Intl Class
Technology
Matters
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Recent Publications
- No Recent Publications to Display
Recent Patents
Patent #
Title
Filing Date
Issue Date
Intl Class
8956539 System and method for drying biosolids and enhancing the value of dried biosolidsMar 09, 13Feb 17, 15[C05F, C02F]
7323108 Combined biological and ballasted flocculation process for treating wastewaterApr 17, 07Jan 29, 08[C02F]
6919031 Method of treating water and wastewater with a ballasted flocculation process and a chemical precipitation processNov 02, 01Jul 19, 05[C02F]
Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
2006/0108,273 Ballasted flocculation process and system incorporating an electro-coagulation reactor for treating water or wastewaterAbandonedFeb 04, 05May 25, 06[B01D]
5182021 Biological process for enhanced removal of ammonia, nitrite, nitrate, and phosphate from wastewaterExpiredDec 16, 91Jan 26, 93[C02F]
5160043 Method of exhausting dissolved oxygen in a nitrogen removal wastewater treatment processExpiredSep 09, 91Nov 03, 92[C02F]
4650585 Method for minimizing diurnal swing in phosphorus content of effluent streams from wastewater treating plantsExpiredApr 17, 84Mar 17, 87[C02F]
4556491 Avoidance of rising sludge in biological wastewater treatment clarifiersExpiredDec 03, 84Dec 03, 85[C02F]
4552663 Process for the removal of ammoniacal nitrogen in the BOD sorption zone of a wastewater treatment plantExpiredJul 31, 84Nov 12, 85[C02F]
4271026 Control of activated sludge wastewater treating process for enhanced phosphorous removalExpiredOct 09, 79Jun 02, 81[C02F]
4257897 Process for reabsorption and retention of phosphorous by activated biomassExpiredOct 26, 79Mar 24, 81[C02C]
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