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Data through Dec 31, 2025
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The 2500
T2
The 2500
— 20 Patents
Rank
(All Time):
#29,670
of
105,732
Top 30%
3
inventors
20
Patents All Time
Patents per Year
Patents granted per year, 1981 to 1993
Bar chart with a peak of 3 patents in 1986.
peak 3
1981: 2 patents
1981
1982: 1 patents
1984: 1 patents
1984
1986: 3 patents
1987: 3 patents
1987
1988: 1 patents
1989: 1 patents
1989
1990: 2 patents
1991: 3 patents
1991
1992: 1 patents
1993: 2 patents
1993
Top Inventors at The 2500
All Time
Showing
1–3
of
3
inventors
Rank
Name
Patents
1
David W. Roth
8
2
Mark Altus
7
3
Joseph P. Spica
6
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20
Whirlpool International B.V.
20
Johnsen & Jorgensen Plastics Limited
20
Skylite Industry Co.
20
Japan Medical Supply Co.
20
Heliotronic Forschungs- Und Entwicklungsgesellschaft Fur Solarzellen-Grundstoffe Mbh
20
Enichem Anic S.P.A.
20