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

Robert M. Kellogg — 6 Patents

IBM: 5 patents #18,770 of 70,183Top 30%
CLCobe Laboratories: 1 patents #104 of 171Top 65%
Washington Crossing, PA: #26 of 93 inventorsTop 30%
Pennsylvania: #13,718 of 74,527 inventorsTop 20%
Overall (All Time): #779,687 of 4,157,543Top 20%
6 Patents All Time
Robert M. Kellogg has been granted 6 US patents while listed as an inventor at IBM. The first was granted in 1982 and the most recent in March 1987. Robert M. Kellogg ranks #779,687 of 4,157,543 US inventors in our database (top 18.8%). Patent records list Robert M. Kellogg in Washington Crossing, PA, US.

Patents per Year

Patents granted per year, 1982 to 1987Bar chart with a peak of 3 patents in 1983.peak 31982: 1 patents19821983: 3 patents19831984: 1 patents19841987: 1 patents1987

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
4647279 Centrifugal separator Alfred P. Mulzet 1987-03-03 $1,579,000
4430072 Centrifuge assembly Victor R. Kruger, Alfred P. Mulzet 1984-02-07 $15,602,000
4418945 Sterile connectors 1983-12-06 $23,661,000
4390499 Chemical analysis system including a test package and rotor combination Huntington W. Curtis, Kerry W. Kissinger, Robert P. Mappes, Emery Joseph Stephans 1983-06-28 $24,721,000
4387848 Centrifuge assembly Alfred P. Mulzet 1983-06-14 $30,666,000
4332351 Blood fraction extracting centrifuge Victor R. Kruger 1982-06-01 $20,955,000