Patents by Inventor Alberto Cigada

Alberto Cigada has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210285713
    Abstract: A refrigerator includes a rear assembly panel coupled with an assembly cover panel that includes at least one vent. At least one circulation fan is positioned between the rear assembly panel and the assembly cover panel and is proximate the at least one vent. A filter is positioned between the rear assembly panel and the assembly cover panel and is coupled to a photocatalyst to form an activated carbon filter. A light-emitting diode (LED) panel assembly includes a plurality of LEDs positioned on the rear assembly panel and is positioned to project light on the activated carbon filter. An air circulation path extends through the at least one vent and the activated carbon filter and is configured to direct air along the air circulation path, and the activated carbon filter is configured to filter airborne bacteria and particulate matter from the air as the air passes through the activated carbon filter.
    Type: Application
    Filed: May 28, 2021
    Publication date: September 16, 2021
    Applicant: WHIRLPOOL CORPORATION
    Inventors: Ermanno Buzzi, Gabriele Candiani, Alberto Cigada, Fabio Andrea Cigada, Luigi De Nardo, Muhammad Khizar, Maria Paola Pirovano
  • Patent number: 11059957
    Abstract: The present invention related to a thermoplastic composition, suitable to be submitted to common methods of heat forming, or thermoforming, of thermoplastic materials, as well as the thermoformed composite material which is obtained/can be obtained from said thermoplastic composition, said thermoplastic composition and said thermoformed composite material derived therefrom comprising the combination of cellulose with a thermoplastic material comprising a hydrolysable or hydrosoluble polyhydroxylated polymer, such as starch or a polymer based on polyvinyl alcohol (PVA), wherein cellulose is available in an amount ranging from 30 to 60% by Weight, preferably from 40 to 60% by weight, said percentages being calculated on 100 parts by weight of the combination of cellulose with the thermoplastic material comprising a hydrolysable or hydrosoluble polyhydroxylated polymer.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: July 13, 2021
    Assignee: NEXTMATERIALS S.R.L
    Inventors: Alberto Cigada, Mauro Profaizer, Barbara Del Curto, Maria Cristina Tanzi, Silvia Faré, Nadia Barelli
  • Patent number: 11022361
    Abstract: A refrigerator includes a cabinet coupled to one or more doors forming a storage compartment. The refrigerator additionally includes a first fan assembly positioned on an interior surface of a first cabinet wall, and a second fan assembly positioned on the interior surface of a second cabinet wall. The first and second fan assemblies each include: two or more circulation fans; a filter coupled to a photocatalyst to form an activated filter; and a plurality of UV LEDs positioned to project light on the activated filter. An air circulation path is configured to direct air born bacteria and particulate matter within the storage compartment contemporaneously into the first and second fan assemblies using the two or more circulation fans and circulate filtered air into the storage compartment through the activated filter disposed in the air circulation path.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: June 1, 2021
    Assignee: Whirlpool Corporation
    Inventors: Ermanno Buzzi, Gabriele Candiani, Alberto Cigada, Fabio Andrea Cigada, Luigi De Nardo, Muhammad Khizar, Maria Paola Pirovano
  • Publication number: 20200072528
    Abstract: A refrigerator includes a cabinet coupled to one or more doors forming a storage compartment. The refrigerator additionally includes a first fan assembly positioned on an interior surface of a first cabinet wall, and a second fan assembly positioned on the interior surface of a second cabinet wall. The first and second fan assemblies each include: two or more circulation fans; a filter coupled to a photocatalyst to form an activated filter; and a plurality of UV LEDs positioned to project light on the activated filter. An air circulation path is configured to direct air born bacteria and particulate matter within the storage compartment contemporaneously into the first and second fan assemblies using the two or more circulation fans and circulate filtered air into the storage compartment through the activated filter disposed in the air circulation path.
    Type: Application
    Filed: August 29, 2018
    Publication date: March 5, 2020
    Applicant: Whirlpool Corporation
    Inventors: Ermanno Buzzi, Gabriele Candiani, Alberto Cigada, Fabio Cigada, Luigi De Nardo, Muhammed Khizar, Maria Paola Pirovano
  • Publication number: 20200040163
    Abstract: The present invention related to a thermoplastic composition, suitable to be submitted to common methods of heat forming, or thermoforming, of thermoplastic materials, as well as the thermoformed composite material which is obtained/can be obtained from said thermoplastic composition, said thermoplastic composition and said thermoformed composite material derived therefrom comprising the combination of cellulose with a thermoplastic material comprising a hydrolysable or hydrosoluble polyhydroxylated polymer, such as starch or a polymer based on polyvinyl alcohol (PVA), wherein cellulose is available in an amount ranging from 30 to 60% by Weight, preferably from 40 to 60% by weight, said percentages being calculated on 100 parts by weight of the combination of cellulose with the thermoplastic material comprising a hydrolysable or hydrosoluble polyhydroxylated polymer.
    Type: Application
    Filed: June 24, 2016
    Publication date: February 6, 2020
    Inventors: Alberto CIGADA, Mauro PROFAIZER, Barbara DEL CURTO, Maria Cristina TANZI, Silvia FARÉ, Nadia BARELLI
  • Patent number: 9353453
    Abstract: A substrate of a metal selected from the group consisting of titanium, tantalum, titanium alloys and tantalum alloys, modified by anodic spark deposition (ASD) on the surface thereof of a microporous and nanoroughened layer of the oxide of the same metal, said layer being enriched with Ca, P, Si, Na, and at least one metal selected from Ag and Ga. This surface modified metal substrate show excellent osteointegrating properties associated with antibacterial activity. A further advantage resides in that its preparation process does no longer require alkaline etching to promote cellular adhesion.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: May 31, 2016
    Assignee: POLITECNICO DI MILANO
    Inventors: Roberto Chiesa, Alberto Cigada, Cinzia Della Valle
  • Publication number: 20140021055
    Abstract: A substrate of a metal selected from the group consisting of titanium, tantalum, titanium alloys and tantalum alloys, modified by anodic spark deposition (ASD) on the surface thereof of a microporous and nanoroughened layer of the oxide of the same metal, said layer being enriched with Ca, P, Si, Na, and at least one metal selected from Ag and Ga. This surface modified metal substrate show excellent osteointegrating properties associated with antibacterial activity. A further advantage resides in that its preparation process does no longer require alkaline etching to promote cellular adhesion.
    Type: Application
    Filed: July 19, 2012
    Publication date: January 23, 2014
    Applicant: POLITECNICO DI MILANO
    Inventors: Roberto CHIESA, Alberto Cigada, Cinzia Della Valle
  • Patent number: 8388344
    Abstract: Dental implant with biomimetic osteointegrative interface has a substrate of biocompatible material with a first layer thereon, having a first concentration of oxide of the biocompatible material, enriched with a second concentration of phosphorus and with a third concentration of calcium. The ratio between the concentration of calcium and the concentration of phosphorus is greater than two and the biomimetic osteointegrative interface further comprising a second layer having a first surface in contact with the first layer, and a second surface, the second layer having a fourth concentration of oxide enriched with a fifth concentration of calcium and a sixth concentration of phosphorus, the fourth concentration being less than the fifth and sixth concentrations and the ratio between the fifth concentration of calcium and the sixth concentration of phosphorus being no less than three.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: March 5, 2013
    Assignee: Politecnico di Milano
    Inventors: Alberto Cigada, Roberto Chiesa, Enrico Sandrini, Gianni Rondelli, Matteo Santin
  • Publication number: 20120058450
    Abstract: Dental implant with biomimetic osteointegrative interface has a substrate of biocompatible material with a first layer thereon, having a first concentration of oxide of the biocompatible material, enriched with a second concentration of phosphorus and with a third concentration of calcium. The ratio between the concentration of calcium and the concentration of phosphorus is greater than two and the biomimetic osteointegrative interface further comprising a second layer having a first surface in contact with the first layer, and a second surface, the second layer having a fourth concentration of oxide enriched with a fifth concentration of calcium and a sixth concentration of phosphorus, the fourth concentration being less than the fifth and sixth concentrations and the ratio between the fifth concentration of calcium and the sixth concentration of phosphorus being no less than three.
    Type: Application
    Filed: November 10, 2011
    Publication date: March 8, 2012
    Applicant: Politecnico di Milano
    Inventors: Alberto Cigada, Roberto Chiesa, Enrico Sandrini, Gianni Rondelli, Matteo Santin
  • Patent number: 8057657
    Abstract: A method for the biomimetic treatment of an osteointegrative interface on a substrate of biocompatible metal of titanium, tantalum, or their alloys, includes performing a first anodic spark deposition (ASD) treatment of the osteointegrative interface in a calcium glycerophosphate solution, performing a second ASD anodic deposition treatment of the osteointegrative interface in a calcium hydroxide solution and performing an immersion of the osteointegrative interface in a potassium or sodium hydroxide solution.
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: November 15, 2011
    Assignee: Politecnico di Milano
    Inventors: Alberto Cigada, Roberto Chiesa, Enrico Sandrini, Gianni Rondelli, Matteo Santin
  • Publication number: 20100213071
    Abstract: A method for the biomimetic treatment of an osteointegrative interface on a substrate of biocompatible metal of titanium, tantalum, or their alloys, includes performing a first ASD anodic deposition treatment of the osteointegrative interface in a calcium glycerophosphate solution, performing a second ASD anodic deposition treatment of the osteointegrative interface in a calcium hydroxide solution and performing an immersion of the osteointegrative interface in a potassium or sodium hydroxide solution.
    Type: Application
    Filed: May 6, 2010
    Publication date: August 26, 2010
    Applicant: Politecnico di Milano
    Inventors: Alberto Cigada, Roberto Chiesa, Enrico Sandrini, Gianni Rondelli, Matteo Santin
  • Patent number: 7740481
    Abstract: An interface including a substrate of biocompatible material such as titanium, tantalum or their alloys having, on the surface of the substrate, a first layer having a first concentration of oxide of the biocompatible material, enriched with a second concentration of phosphorus and with a third concentration of calcium, the ratio between the concentration of calcium and the concentration of phosphorus being greater than two. The interface also includes a second layer having a first surface in contact with the first layer and a second surface. The second layer has a fourth concentration of oxide enriched with a fifth concentration of calcium and a sixth concentration of phosphorus. The fourth concentration is less than the fifth and sixth concentrations and the ratio between the fifth concentration of calcium and the sixth concentration of phosphorus is no less than three.
    Type: Grant
    Filed: December 17, 2004
    Date of Patent: June 22, 2010
    Assignee: Politecnico di Milano
    Inventors: Alberto Cigada, Roberto Chiesa, Enrico Sandrini, Gianni Rondelli, Matteo Santin
  • Publication number: 20050143743
    Abstract: A biomimetic osteointegrative interface comprising a substrate of biocompatible material such as titanium, tantalum or their alloys comprising, on the surface of the substrate, a first layer having a first concentration of oxide of the biocompatible material, enriched with a second concentration of phosphorus and with a third concentration of calcium, the ratio between the concentration of calcium and the concentration of phosphorus being greater than two. The biomimetic osteointegrative interface further comprises a second layer having a first surface in contact with the first layer and a second surface. The second layer has a fourth concentration of oxide enriched with a fifth concentration of calcium and a sixth concentration of phosphorus. The fourth concentration is less than the fifth and sixth concentrations and the ration between the fifth concentration of calcium and the sixth concentration of phosphorus is no less than three.
    Type: Application
    Filed: December 17, 2004
    Publication date: June 30, 2005
    Inventors: Alberto Cigada, Roberto Chiesa, Enrico Sandrini, Gianni Rondelli, Matteo Santin