Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Chak C. Chan — 1 Patent

STSnap-On Tools: 1 patents #106 of 198Top 55%
King City, CA: #504 of 852 inventorsTop 60%
Overall (All Time): #2,406,284 of 4,157,543Top 60%
1 Patents All Time
Chak C. Chan has been granted 1 US patent while listed as an inventor at Snap-On Tools. All of these patents were granted in 1994. Chak C. Chan ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list Chak C. Chan in King City, ON, CA.

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
5332305 Tool chest with tool pallet George R. Slivon, Nancy C. Rittmann Gasperi, Kenneth C. Happ, Erick E. Alfaro, Roman L. Bauer +3 more 1994-07-26 $7,250,000