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Phyllis K. Holifield — 5 Patents

ExxonMobil: 4 patents #2,519 of 10,161Top 25%
Houston, TX: #4,540 of 21,073 inventorsTop 25%
Texas: #28,633 of 125,132 inventorsTop 25%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
Phyllis K. Holifield has been granted 5 US patents while listed as an inventor at ExxonMobil. The first was granted in 1991 and the most recent in May 1993. Phyllis K. Holifield ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Phyllis K. Holifield in Houston, TX, US.

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
5209859 Inhibited acid system for acidizing wells Dennis A. Williams, James R. Looney, Lee A. McDougall 1993-05-11 $48,785,000
5200096 Method of inhibiting corrosion in acidizing wells Dennis A. Williams, James R. Looney, Lee A. McDougall 1993-04-06 $34,578,000
5130034 Corrosion inhibitor and method of use Dennis A. Williams, James R. Looney, Lee A. McDougall 1992-07-14 $86,501,000
5089153 Method of inhibiting corrosion in acidizing wells Dennis A. Williams, James R. Looney, Lee A. McDougall 1992-02-18
5002673 Corrosion inhibitor and method of use Dennis A. Williams, James R. Looney, Lee A. McDougall 1991-03-26 $102,678,000