| Patents for A01D 44 - Harvesting of underwater plants, e.g. harvesting of seaweed (500) |
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| 04/28/1996 | CA2134515A1 Euphausiid harvesting and processing method and apparatus |
| 02/27/1996 | US5493850 Lake bottom plant and debris gathering apparatus with improved actuation and cleaning of raking mechanism |
| 01/30/1996 | US5487258 Water hyacinth removal apparatus and method |
| 01/09/1996 | US5481856 Method and apparatus for cutting aquatic vegetation |
| 01/06/1996 | CA2127395A1 Aquatic weed harvester |
| 12/19/1995 | US5475970 Aquatic vegetation separator |
| 12/05/1995 | US5472569 Paper comprising cellulose fiber and seaweed particles in integral form |
| 11/09/1995 | WO1995022893A3 Euphausiid harvesting and processing method and apparatus |
| 09/19/1995 | US5450713 Aquatic weed trap |
| 09/05/1995 | US5447018 Aquatic plant de-rooting apparatus |
| 08/31/1995 | WO1995022893A2 Euphausiid harvesting and processing method and apparatus |
| 07/25/1995 | US5435083 Aquatic weed eradicator |
| 07/11/1995 | US5430998 Underwater weed cutting machine |
| 06/20/1995 | US5425222 Underwater weed cutting apparatus |
| 04/11/1995 | US5404696 Harvesting machine |
| 12/13/1994 | US5372001 Aquatic vegetation mowing apparatus |
| 12/04/1994 | CA2097673A1 Aquatic plant de-rooting apparatus |
| 11/01/1994 | US5359835 For inhibiting growth of plant life in water |
| 09/20/1994 | US5347798 Harvesting apparatus |
| 04/26/1994 | US5305585 System for uprooting aquatic plants |
| 10/20/1993 | EP0565920A1 Procedure for manufacturing paper from seaweed and paper thus obtained |
| 09/29/1993 | EP0562072A1 Aquatic plant harvesting system |
| 08/17/1993 | US5235797 Method of harvesting aquatic plants |
| 04/13/1993 | US5201168 Underwater weed cutting apparatus |
| 04/01/1993 | WO1993005638A1 Aquatic plant harvesting system |
| 03/30/1993 | US5197263 Method and apparatus for harvesting aquatic plants |
| 03/02/1993 | US5189867 Aquatic vegetation cutter |
| 01/21/1993 | WO1992021227A3 Apparatus for mechanically removing water plants, in particular water hyacinths, from waters |
| 12/10/1992 | WO1992021227A2 Apparatus for mechanically removing water plants, in particular water hyacinths, from waters |
| 11/10/1992 | US5161354 Aquatic plant harvester |
| 10/23/1992 | CA2040923A1 Underwater weed dredger |
| 10/06/1992 | US5152126 System for uprooting aquatic plants |
| 09/15/1992 | US5146997 Lake weed removing apparatus |
| 09/15/1992 | US5146734 Underwater vegetation cutter |
| 09/02/1992 | CN1018071B Ecological chlorella harvesting method |
| 09/01/1992 | US5142849 Aquatic plant cutting apparatus and aquatic plant recovery boat equipped with the apparatus |
| 07/15/1992 | CN1062634A Skirt belt cutting method |
| 06/16/1992 | CA1303363C Weeder for inland waterways |
| 04/29/1992 | CN2102612U Combined harvester for underwater plants |
| 04/26/1992 | CA2028580A1 Device for the removal of aquatic vegetation |
| 03/29/1992 | CA2043630A1 Aquatic plant cutting apparatus and aquatic plant recovery boat equipped with the apparatus |
| 02/20/1992 | WO1992002691A1 Harvesting apparatus |
| 01/28/1992 | US5083417 Apparatus for harvesting vegetable matter |
| 01/14/1992 | US5079905 Floating weed rake |
| 12/24/1991 | US5074105 Lake rake and methods |
| 12/17/1991 | CA1293128C Weed harvester |
| 12/03/1991 | US5069023 Aquatic vegetation harvester |
| 09/10/1991 | CA1288600C Aquatic vegetation cutter |
| 07/16/1991 | US5031390 Aquatic harvesting equipment |
| 06/04/1991 | US5020307 Method and apparatus for water harvesting |
| 03/19/1991 | US4999982 Weeder for inland waterways |
| 03/06/1991 | EP0414719A1 Aquatic vegetation cutter |
| 10/03/1990 | CN2062938U Algae harvester |
| 07/24/1990 | US4942722 Plant harvester |
| 06/05/1990 | CA1269845A1 Suction harvester for aquatic plants and animals |
| 04/11/1990 | CN1041083A Ecological chlorella harvesting method |
| 12/12/1989 | US4885902 Aquatic vegetation harvester |
| 11/16/1989 | WO1989009538A3 Aquatic vegetation cutter |
| 10/19/1989 | WO1989009538A2 Aquatic vegetation cutter |
| 08/01/1989 | US4852337 Method and apparatus for removing aquatic plants |
| 03/28/1989 | US4815260 Plant harvester |
| 10/25/1988 | US4779404 Suction harvester for aquatic plants and animals |
| 09/06/1988 | US4768331 Lake rake |
| 06/08/1988 | EP0270373A2 A water craft, a paddle wheel for propelling a craft upon water, a floating harvester and a harvester of the type including a cable means which is rotated about its longitudinal axis for winding plant growth thereon |
| 12/22/1987 | US4713929 Harvesting of aquatic vegetation by helicopters |
| 10/08/1987 | WO1987005878A1 Inshore submersible amphibious machines |
| 09/29/1987 | US4696149 Aquatic weed control method and apparatus |
| 06/30/1987 | US4676052 Self-propelled dredge |
| 03/25/1987 | EP0215012A1 Suction harvester for aquatic plants and animals |
| 01/27/1987 | US4638621 Method and system for processing aquatic plants |
| 08/14/1986 | WO1986004482A1 Suction harvester for aquatic plants and animals |
| 04/22/1986 | US4583353 Underwater weed cutter |
| 10/16/1985 | EP0157784A1 Device for cutting grass on uneven grounds and particularly in ditches |
| 08/28/1985 | EP0153217A1 Method and apparatus for the intensive cultivation of aquatic plants |
| 06/04/1985 | US4520616 Method and system for conditioning and removing aquatic plants |
| 04/02/1985 | US4507909 Compactor and paddle wheel for aquatic harvester |
| 03/14/1985 | WO1985000952A1 Device for cutting grass on uneven grounds and particularly in ditches |
| 11/22/1983 | US4416106 Method and apparatus for removal of aquatic plant growth |
| 05/31/1983 | CA1147149A1 Vessel for gathering marine seaweed |
| 03/01/1983 | US4375299 Aquatic weeder |
| 10/05/1982 | CA1132804A1 Floating apparatus for weeding waterways |
| 05/11/1982 | US4328658 Weed harvester |
| 08/04/1981 | CA1106190A1 Weed harvester |
| 07/01/1981 | EP0031224A2 Water weed cutting and/or clearing vessel |
| 06/30/1981 | US4275545 Kelp blade harvester |
| 04/14/1981 | US4261160 Weed removal apparatus |
| 04/07/1981 | US4259828 Irish moss harvester |
| 03/31/1981 | US4258534 Aquatic harvesting apparatus |
| 03/24/1981 | CA1097929A1 Kelp blade harvester |
| 02/03/1981 | US4248033 Thru-flow aquatic harvester |
| 12/23/1980 | US4240243 Intake balancing and satellite collector system |
| 11/18/1980 | CA1089655A1 Irish moss harvester |
| 09/16/1980 | US4222217 Aquatic weed harvesting apparatus |
| 06/03/1980 | US4205507 Aquatic weed cutting apparatus |
| 05/13/1980 | US4202155 Aquatic weed cutter, de-rooter and harvester |
| 04/29/1980 | CA1076369A1 Aquatic weed control machine |
| 04/08/1980 | US4196566 Aquatic weed cutter |
| 12/11/1979 | US4177624 Aquatic plant sampler |
| 02/06/1979 | US4137693 Rake device for removing weeds from lakes |
| 01/31/1978 | US4070978 Floating apparatus for weeding and dredging waterways |