Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Norman E. Rittenhouse — 4 Patents

IBM: 4 patents #21,783 of 70,183Top 35%
Endicott, NY: #177 of 620 inventorsTop 30%
New York: #31,814 of 115,490 inventorsTop 30%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Norman E. Rittenhouse has been granted 4 US patents while listed as an inventor at IBM. The first was granted in 1987 and the most recent in March 1995. Norman E. Rittenhouse ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Norman E. Rittenhouse in Endicott, NY, US.

Patents per Year

Patents granted per year, 1987 to 1995Bar chart with a peak of 1 patents in 1987.peak 11987: 1 patents19871993: 1 patents19931994: 1 patents19941995: 1 patents1995

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
5396280 Analog video processing apparatus and method for eliminating background levels in the analog signal Vincent Caiozza, Donald H. Canfield, Todd C. Fellows, Peter J. Yablonsky 1995-03-07 $9,667,000
5377282 Optical inspection system utilizing dynamic analog-to-digital thresholding Todd C. Fellows, Peter J. Yablonsky 1994-12-27 $9,783,000
5185638 Computer controlled, multiple angle illumination system Vincent C. Conzola, Jeffrey Solomon, Thomas J. Toomey, Peter J. Yablonsky 1993-02-09 $9,865,000
4650333 System for measuring and detecting printed circuit wiring defects Robert M. Crabb, Steven M. DeFoster, Mark West, Richard A. Ziegler 1987-03-17 $27,200,000