Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
KC

Kennecott Copper — 21 Patents

Rank (All Time): #27,518 of 105,732Top 30%
25 inventors
21 Patents All Time

Patents per Year

Patents granted per year, 1980 to 1982Bar chart with a peak of 14 patents in 1980.peak 141980: 14 patents19801981: 6 patents19811982: 1 patents1982

Top Inventors at Kennecott Copper All Time

Showing 1–25 of 25 inventors

RankNamePatents
1 Chih-Chung Wang 3
1 John K. Litchfield 3
3 Charles Portal 2
3 Edwin L. Owen 2
3 George Shinopulos 2
3 Glenn M. Cook 2
3 J. Paul Pemsler 2
3 M. Ronald Randlett 2
3 Ralph W. M. Lai 2
3 Terry F. Bower 2
#11 Chih-Chang Wang 1
#11 David B. George 1
#11 David W. Marshall 1
#11 Donald H. Davidson 1
#11 Gale L. Hubred 1
#11 Leonard K. Bailey 1
#11 Limin Hsueh 1
#11 Ray V. Huff 1
#11 Richard D. Smith 1
#11 Robert A. Hard 1
#11 Robert E. Lueders 1
#11 Robert C. Ruhl 1
#11 Theodore C. Frankiewicz 1
#11 Thomas Wilder, III 1
#11 H. William Flood 1

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