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The Dow Chemical Company

William A Larson

Peter A Doty

Dale P Wilterink

Ramaiah Muthyala

Mark E Soderquist

A wall and ceiling scraping device with collection pan including a scraping blade having a generally rectangular configuration. The scraping blade is defined by a planar upper surface, a planar lower surface, a leading edge, a trailing edge, and opposed side edges. A collection pan is secured to the trailing edge of the scraping blade. A hose coupler is secured to the upper surface of the scraping blade adjacent to the trailing edge thereof. The hose coupler includes a planar plate secured to the scraping blade. The planar plate has a cylindrical tube extending outwardly therefrom in an angular orientation. The tube has an open outer end with internal threads for coupling with a standard water hose. An inner end of the tube has a pair of spray nozzles disposed therein directed towards the leading edge of the scraping blade.

Wall and ceiling scraping device with collection pan

An absorbent dental device has an inner core roll of absorbent material adjustably telescoped within a hollow cylindrical outer roll of absorbent material. The adjustable positioning of the inner core roll within the hollow outer roll permits adjustably sizing of the device, while the pliant material of the rolls facilitates shaping of the device. The device may be used separately as a fluid and debris absorbing device within the patient's mouth during a dental procedure. The device may also be used as an aspirator cover to prevent damage of the mouth tissues and promote patient comfort while at the same time providing the aspirator with an extension of desired size and shape.

Absorbent dental device

A corrosion inhibiting composition including a solution of at least one alkali or alkaline-earth metal halide in water and specific corrosion inhibiting concentrations of zinc ions and thiocyanate ions, for use in well drilling, completion, packer fluid and workover operations.

Corrosion inhibitor for brines

Compositions useful as corrosion inhibitors for high density brines at high temperatures comprise phosphonium salts, such as triphenyldocosyl phosphonium chloride.

Phosphonium salt-containing corrosion inhibitors for high density brines

An elongate, generally cylindrical, hollow cotton roll for use with metal or plastic aspirators or suction tubes for keeping an area dry in medicine and dentistry. The roll has an inner layer of an open mesh fabric which receives the end of the aspirator, a layer of cotton or synthetic roving surrounding the fabric layer, and a layer of braided yarn surrounding the roving to retain same. Also disclosed is a machine for manufacturing such a cotton roll in a continuous length.

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Kailua-Kona, HI, United States of America

William A Larson