Inventor · Plymouth, MN, US

Robert A. MacDonald

142Patents
22h-index
27Co-inventors
90Inventor score

Filing activity: Nov 18, 1993 → Nov 14, 2022

Most-cited inventions

PatentTitleAreaCited byStatus
US6149352A Retaining wall block system Fixed Constructions 134 Expired
US6615561B2 Retaining wall block Fixed Constructions 106 Expired
USD501935S1 Wall block General 86 Expired
US6854231B2 Multi-channel retaining wall block and system Fixed Constructions 81 Expired
US7168892B1 Retaining wall block Fixed Constructions 80 Expired
US6912823B2 Multi-channel retaining wall block and system Fixed Constructions 74 Expired
USD490542S1 Landscaping block General 61 Expired
USD488242S1 Landscaping block General 59 Expired
USD488568S1 Landscaping block General 57 Expired
USD610710S1 Wall block General 55 Expired
USD621070S1 Wall block body General 48 Expired
US7971407B2 Wall block and wall block system for constructing walls Fixed Constructions 44 Active
US7448830B2 Retaining wall block Fixed Constructions 42 Active
US7654776B2 Retaining wall block Fixed Constructions 38 Active
USD663858S1 Landscaping block General 37 Active
USD708765S1 Landscaping block General 35 Active
US7641178B2 Column block system Fixed Constructions 35 Active
US6803002B2 Method for making and treating wall blocks Performing Operations; Transporting 33 Expired
US7780141B2 Mold box for making first and second wall blocks Fixed Constructions 32 Active
USD620615S1 Wall block General 32 Expired
US6447213B1 Retaining wall block system and method with varying block face sizes Fixed Constructions 25 Expired
USD656625S1 Landscaping block General 23 Expired
US6637981B2 Retaining wall block system and method with varying block face sizes Fixed Constructions 22 Expired
USD694914S1 Landscaping block General 22 Active
US9021761B2 Building unit with mating sides Fixed Constructions 22 Active

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