Carol Stream, IL, United States of America

Mark D Ritchie

USPTO Granted Patents = 5 

Average Co-Inventor Count = 2.7

ph-index = 4

Forward Citations = 349(Granted Patents)


Company Filing History:


Years Active: 1992-1996

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5 patents (USPTO):Explore Patents

Title: Biography of Inventor Mark D Ritchie

Introduction: Mark D Ritchie is a notable inventor based in Carol Stream, IL (US). He has made significant contributions to the field of pinball gaming, holding a total of five patents. His innovative designs have enhanced the gameplay experience for enthusiasts around the world.

Latest Patents: Among his latest patents is the "Ball trough for pinball games." This invention features a channel that moves the ball between the drain hole and the shooter lane, utilizing a rotatable carrier to transport the ball effectively. Another notable patent is the "Tilting play feature for a pinball game," which consists of an inclined ramp that can pivot, allowing players to control the ball's path through the manipulation of flipper buttons.

Career Highlights: Mark has worked with prominent companies in the gaming industry, including Williams Electronics Games, Inc. and Capcom Coin-op, Inc. His experience in these organizations has allowed him to refine his skills and contribute to the development of engaging gaming experiences.

Collaborations: Throughout his career, Mark has collaborated with talented individuals such as John W Skalon and Winston H Schilling. These partnerships have fostered creativity and innovation in his projects.

Conclusion: Mark D Ritchie continues to be a significant figure in the realm of pinball gaming. His inventive spirit and dedication to enhancing gameplay have left a lasting impact on the

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