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Douglas A. Johnson
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Groveland, MA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Lighting system and method for PWM adjustable current control
Patent number
10,021,751
Issue date
Jul 10, 2018
Black Tank LLC
Douglas A. Johnson
F21 - LIGHTING
Information
Patent Grant
System and method for data conversion
Patent number
9,836,422
Issue date
Dec 5, 2017
Black Tank LLC
Douglas A. Johnson
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Apparatus for inverting DC voltage to AC voltage
Patent number
8,536,734
Issue date
Sep 17, 2013
East Coast Research and Development, LLC
Douglas A. Johnson
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Adaptive cooling method for computer rack enclosure
Patent number
8,348,731
Issue date
Jan 8, 2013
Wilmington Research and Development Corporation
Douglas A. Johnson
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Induction foil cap sealer
Patent number
7,065,941
Issue date
Jun 27, 2006
Kaps-All Packaging Systems Inc.
Frederick W Sarles
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Induction foil cap sealer
Patent number
6,732,495
Issue date
May 11, 2004
Kaps-All Packaging Systems Inc.
Frederick W. Sarles
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Induction foil cap sealer employing litz wire coil
Patent number
6,629,399
Issue date
Oct 7, 2003
Kaps-All Packaging Systems Inc.
Frederick W. Sarles
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Induction driven power supply for circuits accompanying portable he...
Patent number
6,566,634
Issue date
May 20, 2003
Wilmington Research and Development Corporation
Stephen B. Boyd
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Open loop control with velocity threshold for pneumatic hoist
Patent number
6,547,220
Issue date
Apr 15, 2003
Wilmington Research and Development Corporation
Douglas A. Johnson
B66 - HOISTING LIFTING HAULING
Information
Patent Grant
Backup power supply charged by induction driven power supply for ci...
Patent number
6,534,753
Issue date
Mar 18, 2003
Wilmington Research and Development Corporation
Stephen B. Boyd
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Slotted induction heater
Patent number
6,412,252
Issue date
Jul 2, 2002
Kaps-All Packaging Systems, Inc.
Frederick Williams Sarles
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Patents Applications
last 30 patents
Information
Patent Application
LIGHTING SYSTEM AND METHOD FOR PWM ADJUSTABLE CURRENT CONTROL
Publication number
20170181242
Publication date
Jun 22, 2017
Black Tank LLC
Douglas A. Johnson
F21 - LIGHTING
Information
Patent Application
SYSTEM AND METHOD FOR DATA CONVERSION
Publication number
20160218989
Publication date
Jul 28, 2016
BLACK TANK LLC
Douglas A. JOHNSON
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
APPARATUS FOR INVERTING DC VOLTAGE TO AC VOLTAGE
Publication number
20110254373
Publication date
Oct 20, 2011
EAST COAST RESEARCH AND DEVELOPMENT, LLC
Douglas A. Johnson
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Application
System for producing rolls of air-filled cushioning material
Publication number
20070181258
Publication date
Aug 9, 2007
Free-Flow Packaging International, Inc.
William Morris Robinson
B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD
Information
Patent Application
Adaptive cooling method for computer rack enclosure
Publication number
20070097636
Publication date
May 3, 2007
Douglas A. Johnson
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Automatic hardware and firmware generation for multi-function custo...
Publication number
20060015844
Publication date
Jan 19, 2006
WRD Corporation
Douglas A. Johnson
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Induction foil cap sealer
Publication number
20040200194
Publication date
Oct 14, 2004
KAPS-ALL PACKAGING SYSTEMS, INC.
Frederick W. Sarles
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
Induction foil cap sealer
Publication number
20020184860
Publication date
Dec 12, 2002
KAPS-ALL PACKAGING SYSTEMS, INC.
Frederick W. Sarles
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
Induction foil cap sealer
Publication number
20020020144
Publication date
Feb 21, 2002
Frederick W. Sarles
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
Induction driven power supply for circuits accompanying portable he...
Publication number
20020008102
Publication date
Jan 24, 2002
Wilmington Research and Development Corporation
Stephen B. Boyd
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Application
Open loop control with velocity threshold for pneumatic hoist
Publication number
20010045549
Publication date
Nov 29, 2001
Douglas A. Johnson
B66 - HOISTING LIFTING HAULING