U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Electronic gas meter

Patent 4918995 Issued on April 24, 1990. Estimated Expiration Date: Icon_subject January 4, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Correction circuit
Patent #: 4093871
Issued on: 06/06/1978
Inventor: Plumb, et al.

Liquid meter comprising a circuit for reducing a detection error resulting from a variable flow rate
Patent #: 4306457
Issued on: 12/22/1981
Inventor: Fukui ,   et al.

Low-power electromagnetic flowmeter
Patent #: 4308753
Issued on: 01/05/1982
Inventor: Olson

Apparatus for determining the throughflow in pipe conduits
Patent #: 4353118
Issued on: 10/05/1982
Inventor: Heimgartner ,   et al.

Personal air sampling system
Patent #: 4375667
Issued on: 03/01/1983
Inventor: Buchan

Fluid flow totalizer
Patent #: 4414634
Issued on: 11/08/1983
Inventor: Louis ,   et al.

Blood fractionation apparatus having collection rate display system
Patent #: 4481827
Issued on: 11/13/1984
Inventor: Bilstad ,   et al.

Thermal flow meter
Patent #: 4534218
Issued on: 08/13/1985
Inventor: Ueno

Apparatus and method for metering sub-10 cc/minute liquid flow
Patent #: 4628743
Issued on: 12/16/1986
Inventor: Miller, Jr. ,   et al.

Semiconductor flow detector for detecting the flow rate and flowing direction of fluid
Patent #: 4637253
Issued on: 01/20/1987
Inventor: Sekimura ,   et al.

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Inventors

Assignee

Application

No. 140714 filed on 01/04/1988

US Classes:

73/861.02, Electrical73/204.11, Thermal type73/204.26With substrate carrier (e.g., thin film)

Examiners

Primary: Goldstein, Herbert

Attorney, Agent or Firm

International Class

G01F 001/68

Abstract

An electronic compact gas meter includes a solid state flow sensor for sensing gas flow rate, data acquisition circuits including an analog-to-digital converter coupled to the sensor for controlling same and providing an output indicative of gas flow, and a digital data processor for receiving the gas flow information from the analog-to-digital converter, processing the information and registering the volumetric gas flow reading at the meter and/or transmitting the volume flow information via RF or telephone communication lines to a remote location.

Other References

  • ON SET Computer Corp., "TATTLETALE.RTM. Model III", Application Note, pp. 4, 5 and 10-11
  • QUARTIC Systems, Inc., "TADC-1 User's Manual", Manual 0017-01, 198
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