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Robert William Kearns
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Bob Kearns has spent most of his life fighting for inventors right to exclude others from using the inventor's invention.

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U.S. PATENTS: Patents invented and held by Robert W. Kearns

Patent No. Title Filing Date Issue Date

2 959 347 Means for Extending the Useful Frequency Response of Measuring Instruments Aug 26, '57 Nov 8, '60

3 123 753 Bi-directional Step Motor Drive Voltage Divider Switching Apparatus May 16, '60 Mar 3, '64

3 259 706 Magnetically Actuated Control Device Jan 30, '62 Jul 5, '66

3 351 836 Windshield Wiper System with Intermittent Operation Dec 1, '64 Nov 17, '67

3 422 331 Motor Speed Control Systems Mar 7, '66 Jan 14, '67

3 483 459 Pulsed Windshield Wiper Control Mar 7, '66 Dec 9, '69

3 500 159 Electronic Control for Windshield Wipers Mar 7, '66 Dec 9, '69

3 529 227 Windshield Wiper Control Mar 3, '67 Sep 15, '70

3 564 374 Intermittent Control Device Sep 21, '67 Feb 16, '71

3 573 584 Motor Speed Control Sep 1, '67 Apr 6, '71

3 581 178 Windshield Wiper Control Device Apr 10, '69 May 25, '71

3 582 747 Intermittent Windshield Wiper System with Electrodynamic Braking May 23, '68 June 1, '71

3 593 090 Intermittent Windshield Wiper Control Apr 16, '69 Jul 13, '71

3 602 790 Intermittent Windshield Wiper System Oct 18, '67 Aug 31, '71

3 604 910 Parallel Comparator with Simultaneous Carry Generator and Analog Output Aug 31, '67 Sep 14, '71

3 721 115 Structure for and Method of Surface Condition Sensing and Indicating and Motor Speed Control Jun 8, '70 Mar 20, '73

3 728 603 Windshield Wiper Control Oct 27, '70 Apr 17, '73

3 737 750 Motor Speed Control Apr 27, '70 Jun 5, '73

3 774 091 Intermittent Windshield Wiper System with Electrodynamic Braking Dec 22, '70 Nov 20, '73

3 796 936 Windshield Wiper Control Device Dec 15, '72 Mar 12, '74

8 876 919 Structure for and Method of Surface Condition Sensing and Indicating and Motor Speed Control Mar 12, '73 Apr 8, '75

3 902 106 Intermittent Windshield Wiper Control Device Nov 7, '69 Aug 26, '75

4,339,698 Control Apparatus for Windshield Wiper System Apr 12, '79 Jul 13, '82

4,494,059 Structure for and Method of Surface Conditioning Sensing and Indicating and Motor Speed Control Jan 9, '80 Jan 15, '85

4,494,107 with James G.H. Quan Digital to Analog Converter Nov 3, '69 Jan 15, '85

4,531,066 Variable Bias Logic Circuit Jan 3, '67 Jul 23, '85

4,544,870 with Tim Kearns Intermittent Windshield Wiper Control System with Improved Motor Speed Control Sep 7, '82 Oct 1, '85

3,458,589 21U by David Tann Intermittent Windshield Wiper Cleaning System Apr 8, '66 Aug 5, '69

3,643,145 21V by David Tann Intermittent Control Device Apr 18, '69 Feb 15, '72

Certified Copies 3,796,936 21W 3,582,747 21X

FOREIGN PATENTS & APPLICATIONS:

Patent No. Country Issue Date

1 182 681 Great Britain Mar 4, '70

1 182 682 Great Britain Mar 4, '70

889 467 Canada Dec 28, '71

892 198 Canada Feb 1, '72

906 628 Canada Aug 1, '72

1 513 188 France Jun 2, '68

P15 88 861.6 Germany (Application) Denied
(Supreme Court-W. Ger.)
798 371 Italy Dec 16, '67

SN 13995/67 Japan Abandoned

SN 3059/67 Sweden Abandoned

SN 3059/67 Sweden Abandoned

Two patents pending in Germany
Application 82 902 503 0 Jul 12, '82

European Patent No. 0 113 341 Dec 28, '90

0 113 341 Great Britain

0 113 341 Sweden
Issued Expires 0 208 142 European Patent based upon 3 July 1991 12 July 2002
Application No. 86 107 668.5
Germany
France
United Kingdom
Sweden

108655/95 'Motor-Generator' Feedback 22 Nov.1995
Speed Control & Intermittent Windshield Wiper System & Moisture Sensitive IWWS

(Japanese)7-108655 "Best" IWW System with wiper 22 Nov.1995 21 Nov.'15
blade velocity at "theta" angle 3-brush velocity feedback  moisture variable dwell system.

Other patents pending

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Read about why I, Ronald J Riley, created this index to Kearns related web sites.
How I Learned to become a successful inventor, history was the key

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