Inventor · disambiguated record
David J. Watanabe
Also filed as: WATANABE DAVID · WATANABE DAVID J
13 granted patents·513 citations·filing 1978–2016
93Inventor score
Top patents by PatentIndex Score
13 records- 0197US4476930AInhibition of scale deposition from steam generation fluidsUNION OIL CO·Filed 1982·Granted Oct 16, 1984·114 cites·32 claims
- 0295US4261421AMethod for selectively acidizing the less permeable zones of a high temperature subterranean formationUNION OIL CO·Filed 1980·Granted Apr 14, 1981·119 cites·15 claims
- 0390US4475595AMethod of inhibiting silica dissolution during injection of steam into a reservoirUNION OIL CO·Filed 1982·Granted Oct 9, 1984·85 cites·23 claims
- 0484US4267887AMethod for acidizing high temperature subterranean formationsUNION OIL CO·Filed 1980·Granted May 19, 1981·45 cites·18 claims
- 0576US4454914AMethod for conditioning geothermal brine to reduce scale formationUNION OIL CO·Filed 1982·Granted Jun 19, 1984·45 cites·21 claims
- 0675US4487265AAcidizing a subterranean reservoirUNION OIL CO·Filed 1981·Granted Dec 11, 1984·32 cites·29 claims
- 0770US4148360AMethod for acidizing high temperature subterranean formationsUNION OIL CO·Filed 1978·Granted Apr 10, 1979·21 cites·28 claims
- 0863US4203492AMethod for acidizing siliceous materials contained in high temperature formationsUNION OIL CO·Filed 1979·Granted May 20, 1980·17 cites·29 claims
- 0960US4567946AIncreasing the permeability of a subterranean reservoirUNION OIL CO·Filed 1984·Granted Feb 4, 1986·17 cites·22 claims
- 1047US9477763B2Personalized search results utilizing previously navigated web sitesBROMAN PAUL ALEX·Filed 2009·Granted Oct 25, 2016·1 cites·22 claims
- 1146US9934315B2Method and system for web searchingEXCALIBUR IP LLC·Filed 2016·Granted Apr 3, 2018·0 cites·19 claims
- 1246US4739833AMethod of acidizing high-temperature subterranean formationsUNION OIL CO·Filed 1986·Granted Apr 26, 1988·8 cites·40 claims
- 1346US4480694AMethod for acidizing high temperature subterranean reservoirsUNION OIL CO·Filed 1982·Granted Nov 6, 1984·9 cites·24 claims
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