Inventor · Weitefeld, DE

Helmut Gerhard

35Patents
10h-index
5Co-inventors
68Inventor score

Filing activity: Sep 17, 1975 → Jun 28, 1999

Most-cited inventions

PatentTitleAreaCited byStatus
US4098426A Double-walled transport container for flowable media Emerging Cross-Sectional Technologies 24 Expired
US4593832A Freight container Performing Operations; Transporting 20 Expired
US4307812A Freight container for flowable substances Performing Operations; Transporting 19 Expired
US4521941A Corner fitting for freight containers Emerging Cross-Sectional Technologies 19 Expired
US4840282A Pressure-resistant tank Performing Operations; Transporting 18 Expired
US4796773A Transport tank including slosh guard elements Performing Operations; Transporting 17 Expired
US4505402A Freight container and corner fitting therefor Physics 17 Expired
US4603788A Freight container for flowable materials Performing Operations; Transporting 16 Expired
US4412626A Freight container with means for locking the tensioning rings Performing Operations; Transporting 15 Expired
US4060174A Self-contained double-tubular transport container Performing Operations; Transporting 12 Expired
US4591064A Freight container Performing Operations; Transporting 10 Expired
US4756447A Temperature-controlled tank container Performing Operations; Transporting 10 Expired
US4095708A Reversing device for hoisting and tipping freight containers Performing Operations; Transporting 10 Expired
US5188252A Freight container Performing Operations; Transporting 9 Expired
US4614278A Tank container Performing Operations; Transporting 9 Expired
US4356925A Pressure-resistant container for liquids, gases or loose material composed of two or more shells Emerging Cross-Sectional Technologies 8 Expired
US4728000A Transport container Performing Operations; Transporting 8 Expired
US4955956A Transport tank Performing Operations; Transporting 8 Expired
US4629085A Frame structure for accommodating a plurality of containers Performing Operations; Transporting 7 Expired
US4905854A Tank container Performing Operations; Transporting 7 Expired
US4854462A Tank container Performing Operations; Transporting 7 Expired
US4941583A Pressure tank Performing Operations; Transporting 7 Expired
US5064091A Swap tank Performing Operations; Transporting 7 Expired
US4315531A Transport container Emerging Cross-Sectional Technologies 7 Expired
US6143376A Method for manufacturing coated short fibers Chemistry; Metallurgy 7 Expired

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.