L. Jonathan Kramer

Person

Warmister, PA, US

People

Patents Grantslast 30 patents

Information Patent Grant
High efficiency power supply for a two-wire loop powered device
- Patent number 6,388,431
- Issue date May 14, 2002
- Ametek, Inc.
- L. Jonathan Kramer
- G05 - CONTROLLING REGULATING
Information Patent Grant
High accuracy measuring system
- Patent number 6,215,319
- Issue date Apr 10, 2001
- Kevin G. Hafer
- G01 - MEASURING TESTING
Information Patent Grant
Method and apparatus for the sonic measurement of sludge and clarit...
- Patent number 6,212,943
- Issue date Apr 10, 2001
- Ametek, Inc.
- Frederick L. Maltby
- G01 - MEASURING TESTING
Information Patent Grant
Method and apparatus for the sonic measurement of sludge and clarit...
- Patent number 6,062,070
- Issue date May 16, 2000
- Drexelbrook Controls, Inc.
- Frederick L. Maltby
- G01 - MEASURING TESTING
Information Patent Grant
Ultrasonic method for material monitoring
- Patent number 5,987,994
- Issue date Nov 23, 1999
- Drexelbrook Engineering Company
- Frederick L. Maltby
- G01 - MEASURING TESTING
Information Patent Grant
Ultrasonic method for material monitoring
- Patent number 5,760,309
- Issue date Jun 2, 1998
- Drexelbrook Engineering Company
- Frederick L. Maltby
- G01 - MEASURING TESTING
Information Patent Grant
Coating responsive material condition monitoring system
- Patent number 5,539,670
- Issue date Jul 23, 1996
- Drexelbrook Controls, Inc.
- Frederick L. Maltby
- G01 - MEASURING TESTING
Information Patent Grant
Error compensating instrument system with digital communications
- Patent number 5,510,779
- Issue date Apr 23, 1996
- Drexelbrook Controls, Inc.
- Frederick L. Maltby
- G08 - SIGNALLING
Information Patent Grant
Continuous condition sensing system
- Patent number 5,278,513
- Issue date Jan 11, 1994
- Drexelbrook Controls, Inc.
- L. Jonathan Kramer
- G01 - MEASURING TESTING
Information Patent Grant
Continuous condition sensing system determining liquid level by adm...
- Patent number 5,045,797
- Issue date Sep 3, 1991
- Drexelbrook Controls, Inc.
- L. Jonathan Kramer
- G01 - MEASURING TESTING
Information Patent Grant
Multiple set point condition monitoring systems
- Patent number 4,799,174
- Issue date Jan 17, 1989
- Drexelbrook Controls, Inc.
- L. Jonathan Kramer
- G01 - MEASURING TESTING
Information Patent Grant
Continuous condition sensing system
- Patent number 4,788,488
- Issue date Nov 29, 1988
- Drexelbrook Controls, Inc.
- L. Jonathan Kramer
- G01 - MEASURING TESTING
Information Patent Grant
Fail-safe instrument system
- Patent number 4,573,040
- Issue date Feb 25, 1986
- Drexelbrook Engineering Company
- Frederick L. Maltby
- G08 - SIGNALLING
Information Patent Grant
RF Admittance apparatus and method for monitoring the contents of a...
- Patent number 4,568,874
- Issue date Feb 4, 1986
- Drexelbrook Controls, Inc.
- L. Jonathan Kramer
- G01 - MEASURING TESTING
Information Patent Grant
Fail-safe instrument system
- Patent number 4,363,030
- Issue date Dec 7, 1982
- Drexelbrook Engineering Company
- Frederick L. Maltby
- G08 - SIGNALLING
Information Patent Grant
Admittance sensing probe having multiple sensing elements
- Patent number 4,208,909
- Issue date Jun 24, 1980
- Drexelbrook Controls, Inc.
- Frederick L. Maltby
- G01 - MEASURING TESTING
Information Patent Grant
Admittance measuring system for monitoring the condition of materials
- Patent number 3,993,947
- Issue date Nov 23, 1976
- Drexelbrook Controls, Inc.
- Frederick L. Maltby
- G01 - MEASURING TESTING

L. Jonathan Kramer

Person

Patents Grantslast 30 patents

High efficiency power supply for a two-wire loop powered device

High accuracy measuring system

Method and apparatus for the sonic measurement of sludge and clarit...

Method and apparatus for the sonic measurement of sludge and clarit...

Ultrasonic method for material monitoring

Ultrasonic method for material monitoring

Coating responsive material condition monitoring system

Error compensating instrument system with digital communications

Continuous condition sensing system

Continuous condition sensing system determining liquid level by adm...

Multiple set point condition monitoring systems

Continuous condition sensing system

Fail-safe instrument system

RF Admittance apparatus and method for monitoring the contents of a...

Fail-safe instrument system

Admittance sensing probe having multiple sensing elements

Admittance measuring system for monitoring the condition of materials