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Fitt
Andrew J. Fitt, Cambridge GB
| Patent application number | Description | Published |
|---|---|---|
| 20100057407 | SYSTEM AND METHOD FOR A SPATIAL INDEX - A system, method, and computer program for creating an index structure for spatial data, comprising representing a product structure by a network of nodes and edges; setting a local geometric bound for each of said network nodes; propagating a cumulative geometric bound of said local geometric bounds along each of said network edges; and simplifying said cumulative geometric bound at each of said network node during said propagation; whereby a geometric bound of each network node forms a spatial index geometric bound for a matching data model object and appropriate means and computer-readable instructions. | 03-04-2010 |
| 20100057729 | System, Method, and Computer Program Product for a Geometric Search of a Configurable Product Structure - A method for searching a bill of materials (BOM) in a data processing system, a data processing system configured to perform a corresponding method, and a computer program product encoded with instructions for performing the method. The method includes retrieving BOM data in a data processing system, and forming a wavefront queue of a plurality of proto lines corresponding to the BOM data. The method also includes determining the cumulative geometric bounds of multiple ones of the plurality of proto lines and performing a geometric bounds test on the cumulative geometric bounds of multiple ones of the plurality of proto lines. The method also includes producing a BOM line to each proto line that passes the geometric bounds test, and adding the produced BOM lines to a candidate results list stored in the data processing system. | 03-04-2010 |
Jeffrey M. Fitt, Centreville, VA US
| Patent application number | Description | Published |
|---|---|---|
| 20090029846 | HF alkylation process with acid regeneration - The regeneration of HF alkylation acid in an alkylation unit is improved by withdrawing a vapor stream from the HF regenerator tower and condensing the stream to form a liquid fraction which is accumulated in a side distillation zone; the collected liquid fraction, comprising HF acid, water and some stripping medium is distilled in a batch or continuous type operation to drive off the HF acid (along with stripping medium) and the vapor is returned to the regenerator-stripper vessel. The distillation of the sidedraw liquid is continued until the composition of the liquid attains the azeotropic value or as near to that value as desired. The azeotrope, comprising water and acid can then be dropped out of the distillation vessel for disposal by neutralization in the conventional way. | 01-29-2009 |
| 20090221863 | HF akylation process - An HF alkylation process for producing gasoline boiling range alkylate product by the alkylation of a light olefin with an isoparaffin in the presence of hydrogen fluoride as an alkylation catalyst, in which the content of organic fluorides in the alkylation product stream is reduced by recontact with additional HF alkylation acid after which the hydrocarbon phase and the denser acid-containing phase are separated in a hydrocyclone. The use of the hydrocyclone enables the acid inventory of the unit to be significantly reduced which still achieving satisfactory removal of the unwanted fluoride by-products. | 09-03-2009 |
Jonathan Fitt, Cambridgeshire GB
| Patent application number | Description | Published |
|---|---|---|
| 20090153926 | Hologram Imaging Techniques And Holograms - This invention relates to improved techniques for reading holograms, in particular volume reflection holograms, and to improved security documents incorporating volume reflection holograms. | 06-18-2009 |