https://patentbrief.org/company/union-carbide-corp Plain-English explanations of patents assigned to Union Carbide Corp, newest first. en-us Sat, 13 Jun 2026 10:09:02 GMT https://patentbrief.org/patent/us/2960558/alkaline-battery-dry-cell A 1957 patent from Union Carbide that defined the construction of the long-lasting alkaline battery, replacing older zinc-carbon designs. Tue, 15 Nov 1960 00:00:00 GMT https://patentbrief.org/patent/us/2960558/alkaline-battery-dry-cell