With 491 patents published between 2002 and 2022, Halliburton Co holds the most number of patents in the Construction sector in Canada, of which 89.6% was contributed by its subsidiary Halliburton Energy Services Inc.
The second largest number of patents were published by Schindler Holding Ltd with 426 related patents. The third largest number of patents were published by Masco Corp with 360 related patents, of which 53.3% was contributed by its subsidiary Masco Corp Ltd. The fourth largest number of patents were published by Gebr Knauf KG with 241 related patents, of which 73.4% was contributed by its subsidiary United States Gypsum Company. The fifth largest number of patents were published by 3G Capital Inc with 211 related patents, of which 99.5% was contributed by its subsidiary Hunter Douglas NV.
The top five patent holders, i.e., Halliburton Co, Schindler Holding Ltd, Masco Corp, Gebr Knauf KG, and 3G Capital Inc, together held 1,729 patents during the period.
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