Walter D. Hunter has been granted 25 US patents while listed as an inventor at Chevron . The first was granted in 1980 and the most recent in April 1984. Walter D. Hunter ranks #158,593 of 4,157,543 US inventors in our database (top 3.8%). Patent records list Walter D. Hunter in Houston, TX, US.
Patents per Year Patents granted per year, 1980 to 1984 Bar chart with a peak of 9 patents in 1980. peak 9 1980: 9 patents 1980 1981: 3 patents 1981 1982: 5 patents 1982 1983: 3 patents 1983 1984: 5 patents 1984
Issued Patents All Time
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Showing 1–25 of 25 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
4440652 Process for secondary recovery — 1984-04-03
$25,620,000
4431778 Process for secondary recovery — 1984-02-14
$9,193,000
4430481 Secondary recovery method — 1984-02-07
$12,017,000
4430482 Process for secondary recovery — 1984-02-07
$12,017,000
4425453 Asphaltic compositions containing alkoxylated terpolymers — 1984-01-10
$44,546,000
4417989 Propping agent for fracturing fluids — 1983-11-29
$19,308,000
4406799 Process for secondary recovery — 1983-09-27
$21,612,000
4403071 Sulfated ethoxylated acrylic acid polymer product — 1983-09-06
$5,032,000
4343712 Process for secondary recovery — 1982-08-10
$9,105,000
4341647 Process for secondary recovery — 1982-07-27
$9,785,000
4338203 Process for secondary recovery — 1982-07-06
$3,993,000
4331796 Secondary recovery process — 1982-05-25
$7,529,000
4326969 Process for secondary recovery — 1982-04-27
$4,314,000
4298479 Secondary recovery process utilizing thickened water — 1981-11-03
$12,418,000
4297226 Process for secondary recovery — 1981-10-27
$8,192,000
4297469 Bipolymer of vinyl sulfonic acid-glycidol adduct and acrylamide — 1981-10-27
$8,192,000
4228019 Secondary recovery process — 1980-10-14
$7,820,000
4228016 Secondary recovery process — 1980-10-14
$7,820,000
4228017 Secondary recovery process — 1980-10-14
$7,820,000
4228018 Secondary recovery process — 1980-10-14
$7,820,000
4226731 Secondary recovery process utilizing sulfonated polyphenols — 1980-10-07
$10,415,000
4226730 Secondary recovery method utilizing thickened water — 1980-10-07
$10,415,000
4217230 Secondary recovery process — 1980-08-12
$64,523,000
4216098 Secondary recovery process — 1980-08-05
$32,064,000
4187185 Oil recovery process using oxyalkylated additives Jack H. Park 1980-02-05
$10,343,000
