Parviz Kambin: Method for decompressing herniated intervertebral discs. Pilling Co, Howson and Howson, March 4, 1986: US04573448 (616 worldwide citation)

Decompression of herniated discs in the lumbar spine is carried percutaneously by the insertion of a specially designed cannulated trocar over a guide wire extending through the patient's back toward the herniated disc at an angle of approximately 35 degrees with respect to the patient's perpendicul ...

Jordis Tietje Girault, Brian J Seddon, Jerome F McAleer: Method of making gas permeable membranes for amperometric gas electrodes. Howson and Howson, November 19, 1996: US05575930 (285 worldwide citation)

A method of manufacturing a gas-permeable membrane for an amperometric gas electrode comprising demetallizing areas of a metallized film to obtain a regular array of gas-permeable micropores.

James L Grady, Guang Jiong Chen: Bioconversion of waste biomass to useful products. Bioengineering Resources, Howson and Howson, October 13, 1998: US05821111 (247 worldwide citation)

A process is provided for converting waste biomass to useful products by gasifying the biomass to produce synthesis gas and converting the synthesis gas substrate to one or more useful products. The present invention is directed to the conversion of biomass wastes including municipal solid waste, se ...

Berwyn M Crook: Incrementally adjustable incision liner and retractor. Medical Creative Technologies, Howson and Howson, June 11, 1996: US05524644 (227 worldwide citation)

An incrementally adjustable apparatus and method of use thereof for protecting an incised wound from exposure to bacterial and other harmful contaminants. A pair of resilient O-rings is connected to opposite ends of an impermeable pliable sleeve. One of the O-rings is formed to engage the inner edge ...

Roger M Prevot, Frank E Semersky: Flex and grip panel structure for hot-fillable blow-molded container. Graham Packaging Corporation, Howson and Howson, February 28, 1995: US05392937 (203 worldwide citation)

A hot-fillable, blow-molded container has a body portion with grip panels extending between a front label panel and a rear palm panel. The container body is configured to accommodate reductions in volume caused by hot-filling, capping, and subsequent cooling of contents in a manner which retains its ...

Frank E Semersky, John W Tobias: Grip panel structure for high-speed hot-fillable blow-molded container. Graham Packaging Corporation, Howson and Howson, February 4, 1997: US05598941 (197 worldwide citation)

A hot-fillable, blow-molded container has a grip panel structure which resists inverting when the container is filled with a hot liquid and after the container has been capped. The container and grip panel structure retain their aesthetic appearance and their structural integrity through use by the ...


Patrick F Leahy, Berwyn M Crook, Robert D Rambo: Surgical apparatus. Medical Creative Technologies, Howson and Howson, September 29, 1998: US05813409 (168 worldwide citation)

An improved surgical apparatus for hand-assisted minimum invasive surgery with isolation at the site of a wound from ambient conditions. A sleeve of gas-impermeable material includes entry and exit openings for access to the wound, and ports for introducing surgical instruments into the sleeve withi ...

Patrick F Leahy, Berwyn M Crook, Robert D Rambo: Apparatus and method for use in surgery. Medical Creative Technologies, Howson and Howson, June 24, 1997: US05640977 (161 worldwide citation)

Apparatus and method for hand-assisted minimally invasive laparoscopic surgery which allows for palpation and biophysical feedback within a sterile environment. A sleeve provides a sealed chamber communicating with a wound accessible to an surgeon's hand through entry and exit openings. The entry op ...

Parviz Kambin: Method and instruments for percutaneous arthroscopic disc removal, bone biopsy and fixation of vertebrae. Howson and Howson, October 12, 1999: US05964761 (155 worldwide citation)

The insertion points for guide pins used in percutaneous vertebral fixation by pedicle screw are determined by establishing an approach path on a CT image, measuring on the CT image the distance from the intersection of the approach path and the skin of the patient's back to the patient's midline, a ...