Diduch
David R. Diduch, Charlottesville, VA US
Patent application number | Description | Published |
---|---|---|
20110071550 | Suture Passing Devices and Methods - An embodiment of the invention includes a surgical device for passing suture through soft tissue. The surgical device can include at least one elongate superelastic member having a thickness and having a first resting configuration that defines at least one curve having a first radius of curvature greater than or equal to 3 times the thickness of the superelastic member. The surgical device also can include a thermally formed opening in the superelastic member, the opening adapted to receive at least one strand of suture. Moreover, the surgical device can include a superelastic member adapted to be straightened into a second configuration having a second radius of curvature larger than the first radius of curvature. | 03-24-2011 |
Greg Diduch, Calgary CA
Patent application number | Description | Published |
---|---|---|
20130081325 | SOLVENT DE-ASPHALTING WITH CYCLONIC SEPARATION - The present invention relates to a method of improving a heavy hydrocarbon, such as bitumen, to a lighter more fluid product and, more specifically, to a final hydrocarbon product that is refinery-ready and meets pipeline transport criteria without the addition of diluent. A solid asphaltene by-product is created for easy handling and further processing. The invention is targeted to enhance Canadian bitumen, but has general application in improving any heavy hydrocarbon. | 04-04-2013 |
20130098735 | ENHANCED METHODS FOR SOLVENT DEASPHALTING OF HYDROCARBONS - Improvements to open-art Solvent Deasphalting (SDA) processes have been developed to reduce capital and operating costs for processing hydrocarbon streams are provided whereby open art SDA scheme is modified to include appropriately placed mixing-enabled precipitators (MEP's) to reduce solvent use requirements in an asphaltene separation step and to increase overall reliability for SDA processes, particularly suitable for Canadian Bitumen. When integrated with a mild thermal cracker, the improved SDA configuration further improves crude yield to be pipeline-ready without additional diluent and for use to debottleneck existing facilities such as residue hydrocrackers and coking units. | 04-25-2013 |
20130180888 | LOW COMPLEXITY, HIGH YIELD CONVERSION OF HEAVY HYDROCARBONS - A process for producing pipeline-ready or refinery-ready feedstock from heavy hydrocarbons using a high-performance solvent extraction process with high local solvent-to-process fluid ratios yet maintaining low overall solvent-to-process fluid ratios, by first performing mild thermal cracking on the heavy hydrocarbons and then separating asphaltene-rich fractions from a resulting thermally affected fluid so that the high solvent-to-oil ratio portion of the process acts only on those asphaltene-rich fractions, and producing a dry, solid asphaltene as an end-product. | 07-18-2013 |
20140246357 | SEPARATION OF SOLID ASPHALTENES FROM HEAVY LIQUID HYDROCARBONS USING NOVEL APPARATUS AND PROCESS ("IAS") - An apparatus and process is provided for improved asphaltene separation from heavy hydrocarbon or bitumen with low process complexity through mass transfer using solvent and counter-current flows, with three sections: an upper DAO/solid-asphaltene separation zone, a middle solvent mixing and segregation zone, and a bottom clarification zone. Solvent mixed with heavy hydrocarbon forms a process feed introduced to the process vessel's upper zone and exposed to counter-current solvent removing DAO from solid asphaltene particles in the feed, the particles fall through the middle zone and are mixed with introduced solvent, which introduced solvent segregates DAO-rich solution in the upper zone (for extraction from that zone) from solvent-rich mixtures in the middle mixing and lower clarification zones. Solvent flows and precipitate movement are controlled to optimize mass transfer in process, resulting in high DAO recovery and dry, solid asphaltene product. | 09-04-2014 |
Robin Diduch, Winnipeg CA
Patent application number | Description | Published |
---|---|---|
20120057433 | Display for Use in Managing Movement of a Patient in a Bed - A system is provided for communicating to health care workers the turning, positioning and schedule requirements of dependent patients with pressure ulcers, or at risk for the development of pressure ulcers. The system includes a display indicating a next required position of the patient and a display indicating a time for next movement of the patient to the next position. The time of next movement is calculated by entering an indication of a maximum allowable time for the patient to remain in each position and adding this to the current time. | 03-08-2012 |
20120077168 | Display for Use in Managing Movement of a Patient in a Bed - A system is provided for communicating to health care workers the turning, positioning and schedule requirements of dependent patients with pressure ulcers, or at risk for the development of pressure ulcers. The system includes a display indicating a clock face divided into sections each with a respective window location for displaying graphics of a display element illustrating a required lying position for the patient. Each of the display elements comprises a disk mounted on the substrate for rotation about a center axis thereof at right angles to the substrate with the graphics arranged thereon at angularly spaced positions around the axis so as to rotate a selected one of the graphics to the window to be displayed. | 03-29-2012 |
20130182541 | Display for Use in Managing Movement of a Patient in a Bed - A system is provided for communicating to health care workers the turning, positioning and schedule requirements of dependent patients with pressure ulcers, or at risk for the development of pressure ulcers. The system includes a display indicating a clock face divided into sections each with a respective window location for displaying graphics of a display element illustrating a required lying position for the patient. Each of the display elements comprises a disk mounted on the substrate for rotation about a center axis thereof at right angles to the substrate with the graphics arranged thereon at angularly spaced positions around the axis so as to rotate a selected one of the graphics to the window to be displayed. | 07-18-2013 |