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| Patents for Barthold de Mattia | |||||
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| Number | Date | Patentee | Title | Type | |
| CA-246,554 | Feb. 03, 1925 | B. de Mattia | Core for tires | ||
| CA-246,555 | Feb. 03, 1925 | B. de Mattia | Core for tires | ||
| CA-255,729 | Nov. 24, 1925 | B. de Mattia | Tire building core | ||
| CA-272,661 | Jul. 26, 1927 | B. de Mattia | Method of making pneumatic tires | ||
| CA-275,075 | Nov. 01, 1927 | B. de Mattia | Collapsible core | ||