Growing community of inventors

Stephenville, TX, United States of America

Donald L Douglas

Average Co-Inventor Count = 3.00

ph-index = 2

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 23

Donald L DouglasDavid W Merryfield (2 patents)Donald L DouglasDan E Lowrance (2 patents)Donald L DouglasDaniel R Fink (1 patent)Donald L DouglasJames R Soltau (1 patent)Donald L DouglasDonald L Douglas (3 patents)David W MerryfieldDavid W Merryfield (2 patents)Dan E LowranceDan E Lowrance (2 patents)Daniel R FinkDaniel R Fink (6 patents)James R SoltauJames R Soltau (5 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Fmc Technologies, Inc. (1 from 447 patents)

2. Special Projects Manufacturing, Inc. (1 from 2 patents)

3. Special Projects Mfg., Inc. (1 from 1 patent)


3 patents:

1. 8096193 - Turbine flow meter having easily removable meter cartridge

2. 4889259 - Apparatus for injecting balls into a well

3. 4759469 - Apparatus and method for injecting balls into a well

Please report any incorrect information to support@idiyas.com
idiyas.com
as of
1/3/2026
Loading…