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USPTO Patent Rankings Data through Dec 31, 2025
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Sandor Grosshandler — 10 Patents

EAE.I. Du Pont De Nemours And: 10 patents #1,151 of 12,129Top 10%
Middleburg Heights, OH: #7 of 97 inventorsTop 8%
Ohio: #8,096 of 73,341 inventorsTop 15%
Overall (All Time): #481,000 of 4,157,543Top 15%
10 Patents All Time
Sandor Grosshandler has been granted 10 US patents. The first was granted in 1981 and the most recent in January 1988. Sandor Grosshandler ranks #481,000 of 4,157,543 US inventors in our database (top 11.6%). Patent records list Sandor Grosshandler in Middleburg Heights, OH, US.

Patents per Year

Patents granted per year, 1981 to 1988Bar chart with a peak of 4 patents in 1986.peak 41981: 1 patents19811984: 1 patents19841985: 1 patents19851986: 4 patents19861987: 2 patents19871988: 1 patents1988

Issued Patents All Time

Showing 1–10 of 10 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
4721555 Electrolysis cell seal means 1988-01-26 $16,253,000
4673479 Fabricated electrochemical cell Gregory J. E. Morris, Richard N. Beaver, John R. Pimlott, Hiep D. Dang 1987-06-16 $17,761,000
4654134 Combination seal and tentering means for electrolysis cells Gregory J. E. Morris 1987-03-31 $4,142,000
4613163 Joint for pipe 1986-09-23 $2,981,000
4604171 Unitary central cell element for filter press, solid polymer electrolyte electrolysis cell structure and process using said structure Gregory J. E. Morris, John R. Pimlott, Richard N. Beaver, Hiep D. Dang 1986-08-05 $3,479,000
4581114 Method of making a unitary central cell structural element for both monopolar and bipolar filter press type electrolysis cell structural units Gregory J. E. Morris, Richard N. Beaver, John R. Pimlott, Hiep D. Dang 1986-04-08 $2,718,000
4568434 Unitary central cell element for filter press electrolysis cell structure employing a zero gap configuration and process utilizing said cell Gregory J. E. Morris, Richard N. Beaver, John R. Pimlott, Hiep D. Dang 1986-02-04 $2,001,000
4560452 Unitary central cell element for depolarized, filter press electrolysis cells and process using said element Gregory J. E. Morris, Richard N. Beaver, John R. Pimlott, Hiep D. Dang 1985-12-24 $4,804,000
4488946 Unitary central cell element for filter press electrolysis cell structure and use thereof in the electrolysis of sodium chloride Gregory J. E. Morris, Richard N. Beaver, Hiep D. Dang, John R. Pimlott 1984-12-18 $2,688,000
4303518 Low pressure high volume filter apparatus 1981-12-01 $4,644,000