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Hanover Park, IL, United States of America

Roger William Lhotak

USPTO Granted Patents = 11

Average Co-Inventor Count = 1.5

ph-index = 8

Forward Citations = 210(Granted Patents)

Location History:

Elburn, IL (US) (1990 - 1994)
Hanover Park, IL (US) (1998 - 2016)

Company Filing History:

The Chamberlain Group, Inc.

Years Active: 1990-2016

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11 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 9458902 - Movable barrier hydraulic braking (2016-10-04),

2. 8783426 - Movable barrier hydraulic braking (2014-07-22),

3. 8001725 - Shaft joint (2011-08-23),

4. 6414454 - Pass point system for controlling the operation of movable barriers (2002-07-02),

5. 6051947 - Pass point system for controlling the operation of movable barriers (2000-04-18),

6. 5860365 - Tensioning device for flexible drive member (1999-01-19),

7. 5761850 - Garage door operator having vibration damper for noise reduction (1998-06-09),

8. 5297782 - Modular snubber apparatus (1994-03-29),

9. 5239776 - Garage door opener (1993-08-31),

10. 5137500 - Sprocket conversion kit for garage door opener (1992-08-11),

11. 4973257 - Battery terminal (1990-11-27),

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