Ultrasonic 2-phase flow apparatus and stratified level detector
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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May 14, 2002
Issued Date -
N/A
app pub date -
Sep 1, 1999
filing date -
Mar 11, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An apparatus and related method for measuring the degree of stratified flow in a two-phase flow is disclosed. Alternate embodiments include a single transducer level detector and a multiple transducer level detector. Further, these level detectors may be either integrated into or used in conjunction with an ultrasonic flow meter, or may be used in conjunction with some other meter that determines speed of sound for the flowing gas.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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DANIEL INDUSTRIES INC | 9753 PINE LAKE DRIVE HOUSTON TX 77055 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Letton, Winsor | Houston, TX | 5 | 174 |
# of filed Patents : 5 Total Citations : 174 | |||
Zanker, Klaus J | Houston, TX | 10 | 456 |
# of filed Patents : 10 Total Citations : 456 |
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Patent Citation Ranking
- 16 Citation Count
- G01N Class
- 54.34 % this patent is cited more than
- 23 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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Sep 10, 2019 | I | Issuance | |
Nov 25, 2015 | F | Filing | |
May 07, 2009 | PD | Priority Date |

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