Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 7282086 | Fluid filter cleaning apparatus A filter cleaning apparatus for cleaning a filter using cleaning fluid comprises a housing, a filter holder for holding the filter, wherein the filter holder is mountable in the housing, a rotating means for rotating the filter holder, wherein the filter holder hold... | 10/16/2007 |
| 7213642 | Multi-fluid sparging A diffuser useful for sparging to remove contaminant in situ is described. The diffuser includes a first elongated member having a sidewall with a first portion of the length of the sidewall being microporous, and a second portion of the length of the sidewall havin... | 05/08/2007 |
| 6383368 | Method for pretreatment of refinery feed for desalting the feedstock, and related additive A metal salt removal procedure for use with a crude oil flow is disclosed. A small amount of water, and a caustic in the range of 7-12 pH, and preferably 9-12 pH, are injected to form water bubbles surrounded by oil. An ethylene oxide reacted with polypro... | 05/07/2002 |
| 5116423 | Apparatus for washing pulp The present invention relates to a method and an apparatus for washing pulp according to which method the pulp is supplied onto a movable liquid-pervious support surface to form a substantially continuous layer; and washing liquid is supplied to the pulp ... | 05/26/1992 |
| 4919158 | Method and apparatus for washing pulp The present invention relates to a method and an apparatus for washing pulp according to which method the pulp is supplied onto a movable liquid-pervious support surface (2) to form a substantially continuous layer (7); and washing liquid is supplied to t... | 04/24/1990 |
| 4795568 | Oxidative evaporation process and apparatus An oxidative evaporation process for treating waste water or other aqueous solutions containing organics or reduced forms of inorganics is described. The process relies upon excessive amounts of pressurized oxygen gas to both oxidize the solution and to i... | 01/03/1989 |
