De Gracia
Carlos U. De Gracia, Laporte, TX US
Patent application number | Description | Published |
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20100152382 | Thermoplastic Olefin Compositions - An in-or polymer blend including (a) a propylene-containing first polymer; and (b) propylene-containing second polymer having a different crystallinity from the first polymer. The polymer blend has a melting temperature, Tm, of at least 135° C., a melt flow rate of at least 70 dg/min, a tensile strength of at least 8 MPa, an elongation at break of at least 300%. | 06-17-2010 |
20120245311 | Novel Catalysts And Methods Of Use Thereof To Produce Vinyl Terminated Polymers - This invention relates to a homogenous process for making a vinyl terminated propylene polymer, wherein the process comprises: contacting, propylene, under polymerization conditions, with a catalyst system comprising an activator and at least one metallocene compound, where the metallocene compound is represented by the formula: | 09-27-2012 |
Carlos U. De Gracia, La Porte, TX US
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20100152390 | Heterogeneous In-Reactor Polymer Blends - An in-reactor polymer blend comprises (a) a propylene-containing first polymer; and (b) an ethylene-containing second polymer such that the polymer blend comprises between about 50 wt % and about 80 wt % units derived from ethylene and between about 50 wt % and about 20 wt % units derived from propylene. The blend is substantially free of dienes and the content of ethylene in the second polymer in the form of ethylene-ethylene-ethylene triads is at least 40%. The second polymer contains at least 0.1 branch having 8 or more carbon atoms per 10,000 carbons. In addition, the blend has a strain hardening index of at least 1.8, a shear thinning slope in the plot of log(dynamic viscosity) versus log(frequency) of less than −0.2 and exhibits at least two peaks when subjected to Differential Scanning Calorimetry (first melt) corresponding to a first melting point of at least 150° C. and a second melting point of at least 40° C. such that the difference between the first and second melting temperatures is at least 20° C. | 06-17-2010 |
Monica De Gracia, San Sebastian (gipuzkoa) ES
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20130001142 | ADVANCED CONTROL SYSTEM FOR WASTEWATER TREATMENT PLANTS WITH MEMBRANE BIOREACTORS - An advanced control system for a membrane bioreactor based wastewater treatment plant is disclosed. The disclosed control system comprises a membrane bioreactor (MBR) system and a microprocessor based controller that receives signals corresponding to selected measured MBR parameters and calculates or estimates one or more MBR calculated parameters including Membrane Conductivity (Fxc); and/or Oxygen Uptake Rate (OUR). The microprocessor based controller compares one or more calculated or estimated MBR parameters to prescribed setpoints or desired ranges and governs one or more pumps and valves in the MBR system to adjust the cleaning cycle the MBR system, the MBR flows in the MBR system, or the influent flow to the biological basin in response thereto. | 01-03-2013 |
20140311972 | NITRIFICATION METHOD AND SYSTEM - A method and nitrification system for nitrifying a centrate stream produced from dewatering sludge within a wastewater treatment facility in which the centrate stream into a nitrification reactor containing accumulated centrate with a bacterial population of AOB and NOB nitrifying bacteria to the ammonia content within the centrate stream into nitrates and an oxygen containing gas is introduced into the accumulated centrate to support bacterial activity of the AOB and NOB nitrifying bacteria. Additionally, a conditioning method is obtained in which the bacterial population is grown within the nitrification reactor in conditioning stages that involve the introduction of incoming centrate into the reactor with a successively decreasing degree of dilution. | 10-23-2014 |
Rolando F. De Gracia, San Diego, CA US
Patent application number | Description | Published |
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20120296725 | SYSTEM AND METHOD FOR MANAGING TRANSACTIONS WITH A PORTABLE COMPUTING DEVICE - A method and system include verifying credentials for gaining access to a central mobile payment controller using the portable computing device (“PCD”). The central mobile payment controller may receive a merchant identifier corresponding to a merchant and then it may compare the merchant identifier against loyalty account data stored in a database. The central controller may also receive product scan data and compare the product scan data against one of offer data and coupon data in a database. After these comparisons, any matches of product scan data to offer data or coupon data may be sent to the PCD and an electronic cash register (“ECR”). Similarly, any matches of the merchant identifier to loyalty account data may be transmitted to the PCD and ECR. During or after the purchase transaction, a message may be generated by the central mobile payment controller which lists one or more preferred payment options. | 11-22-2012 |