| Patents for C05B 21 - Mixtures of phosphatic fertilisers covered by more than one of main groups (132) | |
|---|---|
| 10/1996 | |
| 10/16/1996 | EP0737173A1 Citrate soluble slow release iron humate |
| 02/1996 | |
| 02/20/1996 | US5492553 Mixture of non-polymerized dry urea phosphate, calcium nitrate or calcium chloride; forms stable, precipitate-free solution when dissolved in water |
| 02/06/1996 | US5489323 Growth promoter for aquatic plant and method for application thereof |
| 11/1995 | |
| 11/22/1995 | CN1111932A Methods and compositions for enhancing carbon fixation in plants |
| 07/1995 | |
| 07/05/1995 | EP0661249A1 Growth promoter for aquatic plant and method for application thereof |
| 07/05/1995 | EP0645962A4 Methods and compositions for enhancing carbon fixation in plants. |
| 06/1995 | |
| 06/22/1995 | WO1995016648A1 Citrate soluble slow release iron humate |
| 06/22/1995 | CA2177853A1 Citrate soluble slow release iron humate |
| 04/1995 | |
| 04/05/1995 | EP0645962A1 Methods and compositions for enhancing carbon fixation in plants |
| 03/1995 | |
| 03/07/1995 | US5395418 Adding to water a mixture containing urea phosphate as principal phosphate source and calcium nitrate or chloride as calcium source |
| 01/1995 | |
| 01/31/1995 | US5385596 Treating of agricultural soil |
| 10/1994 | |
| 10/11/1994 | US5354350 Citrate soluble slow release iron humate |
| 01/1994 | |
| 01/06/1994 | WO1994000009A1 Methods and compositions for enhancing carbon fixation in plants |
| 01/06/1994 | CA2137376A1 Methods and compositions for enhancing carbon fixation in plants |
| 02/1993 | |
| 02/17/1993 | CN1069015A Silicophosphate fertilizer and its production method |
| 12/1992 | |
| 12/15/1992 | US5171349 Water-soluble solid fertilizer using urea phosphate and calcium nitrate; precipitate-free solutions; non-chelated metal salt micronutrients |
| 10/1992 | |
| 10/30/1992 | CA2041466A1 Nature's magic |
| 03/1992 | |
| 03/11/1992 | EP0473750A1 Process for removing ammonium compound impurities from industrial, agricultural or private waste water |
| 10/1991 | |
| 10/30/1991 | CN1055721A Process for purifying industrial agricultural and civil sewage |
| 10/03/1991 | WO1991014656A1 Process for removing ammonium compound impurities from industrial, agricultural or private waste water |
| 09/1991 | |
| 09/26/1991 | DE4009082A1 Verfahren zur reinigung von industriellen, landwirtschaftlichen oder privaten abwaessern von ihren verunreinigungen an ammoniumverbindungen Method for cleaning of industrial, agricultural or private wastewater from their impurities on ammonium compounds |
| 06/1990 | |
| 06/27/1990 | CN1043306A High-effective phosphorus-ammonium compound fertilizer |
| 07/1989 | |
| 07/05/1989 | CN1033617A Ardealine long-acting compound fertilizer and preparing technique |
| 06/1989 | |
| 06/07/1989 | CN1033232A Hezhuangbao and its prepn. |
| 09/1986 | |
| 09/17/1986 | CN85102377A Producing potassium dihydrogen phosphate from phosphate rock and potassium salt by stepwise method |
| 05/1986 | |
| 05/13/1986 | US4588431 Mixed phosphatic fertilizer and process for producing the same |
| 04/1984 | |
| 04/03/1984 | US4440560 Humic acid-fused phosphate chelate compound |
| 03/1983 | |
| 03/15/1983 | USRE31179 Method of processing waste sludge from wet phosphoric acid purification facilities |
| 11/1981 | |
| 11/17/1981 | US4300939 Method of processing waste sludge from wet phosphoric acid purification acid purification facilities |
| 11/10/1981 | CA1112020A1 Purification of phosphoric acid |
| 03/1981 | |
| 03/24/1981 | US4257898 Contacting with hot steelworks slag |
| 01/1979 | |
| 01/23/1979 | US4136199 Metallic ion removal from phosphoric acid |
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