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David Nichols
David Nichols, Houston, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20090184958 | UPDATING A MODEL OF A SUBTERRANEAN STRUCTURE USING DECOMPOSITION - To update a model of a subterranean structure, a partial decomposition is computed of an operator that is used to compute a parameterization representing the update of the model. The partial decomposition of the operator is selected from among a partial eigendecomposition of a Fisher information operator, and a singular vector decomposition of the operator. A term based on additional information is combined with the partial decomposition of the operator to derive an update of the model. | 07-23-2009 |
| 20110069582 | SLANT-STACK FOR TIME GATHER TO ANGLE GATHER CONVERSION - A method to correct errors in a conversion from time gather to angle gather using slant stacks wherein the slant stacking is performed along a direction that is normal to a dip or along three orthogonal directions. The slant stacking is performed in various domains. | 03-24-2011 |
| 20110098996 | Sifting Models of a Subsurface Structure - Multiple models are generated based on information relating to uncertainties of model parameters, where the models are consistent with preexisting data regarding a subsurface structure. A system receives, on a continual basis, information collected as an operation is performed with respect to the subsurface structure. The multiple models are recursively sifted to progressively select smaller subsets of the models as the collected information is continually received. | 04-28-2011 |
| 20110176386 | WAVE EQUATION ILLUMINATION - A method for generating an illumination map. The method includes receiving an earth model that represents one or more properties of the earth. The method then includes receiving a target area in the earth model and propagating one or more wavefields from the target area to a potential seismic data acquisition region in the earth model. After propagating the wavefields, the method includes decomposing the propagated wavefields into one or more subsets of the propagated wavefields and creating the illumination map based on the subsets of the propagated wavefields. The illumination map may indicate one or more contributions of one or more synthetic source and receiver pairs for illuminating the target area in the earth model. The method may then include creating a seismic survey design based on the contributions. | 07-21-2011 |
David Nichols, West Chester, PA US
| Patent application number | Description | Published |
|---|---|---|
| 20100280617 | MODULAR INTERVERTEBRAL IMPLANT - An intervertebral implant component includes an inlay which fits into an endplate, where the inlay is prevented from moving relative to the endplate. Various embodiments of locking mechanisms for preventing movement are disclosed. In some preferred embodiments, a surgeon is able to see that the locking mechanism is properly engaged. | 11-04-2010 |
David Nichols, Trumbell, CT US
| Patent application number | Description | Published |
|---|---|---|
| 20090318974 | Device For Securing Spinal Rods - A device is disclosed for securing a spinal rod to the spine which includes a head portion configured to receive a spinal rod, a locking cap configured to engage the head portion and the spinal rod upon rotation of the locking cap relative to the head portion to secure the position of the head portion relative to the spinal rod, and a fastener portion depending from the head portion and configured to engage the spine. Methods of utilizing such a device are also disclosed. | 12-24-2009 |
| 20100268280 | DEVICE FOR SECURING SPINAL RODS - A device is disclosed for securing a spinal rod to the spine which includes a head portion configured to receive a spinal rod, a locking cap configured to engage the head portion and the spinal rod upon rotation of the locking cap relative to the head portion to secure the position of the head portion relative to the spinal rod, and a fastener portion depending from the head portion and configured to engage the spine. The locking cap has discontinuous opposed engagement flanges that are received within opposed engagement slots of the head portion when the locking cap is rotated into a locked position. | 10-21-2010 |
David Nichols, Redmond, WA US
| Patent application number | Description | Published |
|---|---|---|
| 20090106822 | Using social networks while respecting access control lists - Techniques are described for use with social networks and associated access information, such as access control lists, indicating which users are allowed to access the social networks. The social networks represent relationships between users. The social networks and access control lists may be represented in a graph which is traversed in connection with performing different operations using the social networks. | 04-23-2009 |
David Nichols, West Lafayette, IN US
| Patent application number | Description | Published |
|---|---|---|
| 20090030025 | TRANS-FUSED CHROMENOISOQUINOLINES SYNTHESIS AND METHODS FOR USE - Optionally substituted chromenoisoquinolines and analogs and derivatives thereof are described herein. In addition, syntheses of these compounds are described herein. In addition, uses of these compounds as dopamine receptor binding compounds are described herein. | 01-29-2009 |
David Nichols, Duncan, OK US
| Patent application number | Description | Published |
|---|---|---|
| 20120018647 | DETECTION METHOD FOR TECHNETIUM 99 - A method of determining the presence of | 01-26-2012 |