Patents by Inventor Rao S. Bezwada

Rao S. Bezwada 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: 20130317118
    Abstract: The present invention relates to compounds of formula I and II, which are functionalized amino acids, and polymers formed from the same. Polymers formed from the functionalized amino acids are expected to have controllable degradation profiles, enabling them to release an active component over a desired time range. The polymers are also expected to be useful in a variety of medical applications.
    Type: Application
    Filed: July 25, 2013
    Publication date: November 28, 2013
    Applicant: BEZWADA BIOMEDICAL, LLC
    Inventor: Rao S Bezwada
  • Publication number: 20130310596
    Abstract: The present invention relates to the discovery of new class of linear and multiarmed hydrolysable linkers and cross linkers for use in the synthesis of biodegradable polymers such as, polyesters, polyurethanes, polyamides, polyureas and degradable epoxy amine resin. The linear and multiarmed hydrolysable linkers of the present invention include symmetrical and/or unsymmetrical ether carboxylic acids, amines, amide diols, amine polyols and isocyanates.
    Type: Application
    Filed: November 8, 2012
    Publication date: November 21, 2013
    Applicant: BEZWADA BIOMEDICAL, LLC
    Inventor: Rao S. Bezwada
  • Publication number: 20130281652
    Abstract: The present invention relates to compounds of formula I, which are functionalized phenolic compounds, and polymers formed from the same. Ar—[O—(X)p—R?]q??I Polymers formed from the functionalized phenolics are expected to have controllable degradation profiles, enabling them to release an active component over a desired time range. The polymers are also expected to be useful in a variety of medical applications.
    Type: Application
    Filed: October 17, 2012
    Publication date: October 24, 2013
    Inventor: Rao S. Bezwada
  • Patent number: 8551519
    Abstract: Novel bioabsorbable and/or biocompatible polyurethanes, polyureas, polyamideurethanes and polyureaurethanes with tunable physical, mechanical properties and hydrolytic degradation profiles are provided for use in biomedical applications such as stents, stent coatings, scaffolds, foams, and films. The disclosed polymers may be derived from biocompatible and/or bioabsorbable polyisocyanates. The present invention also relates to new and improved methods for the preparation of the biocompatible and/or bioabsorbable polyisocyanates.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: October 8, 2013
    Assignee: Bezwada Biomedical, LLC
    Inventor: Rao S Bezwada
  • Patent number: 8552139
    Abstract: The present invention relates to biodegradable polymers (e.g., polyesters and polyester amides) derived from functionalized biologically active compounds that can provide site specific delivery of bioactive compounds upon biodegradation in a controlled manner.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: October 8, 2013
    Assignee: Bezwada Biomedical LLC
    Inventor: Rao S Bezwada
  • Publication number: 20130256374
    Abstract: A staple cartridge assembly for use with a surgical stapler. The assembly has a cartridge body having a support portion with a plurality of staple cavities with openings. There is also a plurality of staples, wherein at least a portion of each the staple is removably stored within a the staple cavity. Each the staple is movable between an unfired position and a fired position, and is deformable between an unfired configuration and a fired configuration. The assembly also includes a compressible tissue thickness compensator configured to be captured within the staples. The compressible tissue thickness compensator at least partially covers the staple cavity openings. The compressed tissue thickness compensator is configured to assume different compressed heights within different the staples. The compressible tissue thickness compensator comprising a lyophilized foam having a hydrophillic agent embedded therein.
    Type: Application
    Filed: June 26, 2012
    Publication date: October 3, 2013
    Inventors: Frederick E. Shelton, IV, Rao S. Bezwada, Mark S. Ortiz
  • Publication number: 20130256375
    Abstract: A staple cartridge assembly for use with a surgical stapler. The assembly has a cartridge body having a support portion with a plurality of staple cavities with openings. There is also a plurality of staples, wherein at least a portion of each the staple is removably stored within a the staple cavity. Each the staple is movable between an unfired position and a fired position, and is deformable between an unfired configuration and a fired configuration. The assembly also includes a compressible tissue thickness compensator configured to be captured within the staples. The compressible tissue thickness compensator at least partially covers the staple cavity openings. The compressed tissue thickness compensator is configured to assume different compressed heights within different the staples. The compressible tissue thickness compensator comprising a lyophilized foam having a hydrophobic agent embedded therein.
    Type: Application
    Filed: June 26, 2012
    Publication date: October 3, 2013
    Inventors: FREDERICK E. SHELTON, IV, Rao S. Bezwada
  • Publication number: 20130245133
    Abstract: The present invention relates to the discovery of new class of hydrolysable amino acid derivatives and absorbable polyester amides, polyamides, polyepoxides, polyureas and polyurethanes prepared therefrom. The resultant absorbable polymers are useful for drug delivery, tissue engineering, tissue adhesives, adhesion prevention, bone wax formulations, medical device coatings, stents, stent coatings, highly porous foams, reticulated foams, wound care, cardiovascular applications, orthopedic devices, surface modifying agents and other implantable medical devices. In addition, these absorbable polymers should have a controlled degradation profile.
    Type: Application
    Filed: May 3, 2013
    Publication date: September 19, 2013
    Applicant: BEZWADA BIOMEDICAL, LLC.
    Inventor: Rao S. BEZWADA
  • Patent number: 8519156
    Abstract: The present invention relates to compound of formula I, which are functionalized, non-phenolic amino acids, and polymers formed from the same. Polymers formed from the functionalized amino acids are expected to have controllable degradation profiles, enabling them to release an active component over a desired time range. The polymers are also expected to be useful in a variety of medical applications.
    Type: Grant
    Filed: December 30, 2012
    Date of Patent: August 27, 2013
    Assignee: Bezwada Biomedical, LLC
    Inventor: Rao S Bezwada
  • Patent number: 8519175
    Abstract: The present invention relates to compounds of formula I and II, which are functionalized amino acids, and polymers formed from the same. Polymers formed from the functionalized amino acids are expected to have controllable degradation profiles, enabling them to release an active component over a desired time range. The polymers are also expected to be useful in a variety of medical applications.
    Type: Grant
    Filed: October 8, 2012
    Date of Patent: August 27, 2013
    Assignee: Bezwada Biomedical, LLC
    Inventor: Rao S Bezwada
  • Patent number: 8461372
    Abstract: The present invention relates to the discovery of new class of hydrolysable amino acid derivatives and absorbable polyester amides, polyamides, polyepoxides, polyureas and polyurethanes prepared therefrom. The resultant absorbable polymers are useful for drug delivery, tissue engineering, tissue adhesives, adhesion prevention, bone wax formulations, medical device coatings, stents, stent coatings, highly porous foams, reticulated foams, wound care, cardiovascular applications, orthopedic devices, surface modifying agents and other implantable medical devices. In addition, these absorbable polymers should have a controlled degradation profile.
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: June 11, 2013
    Inventor: Rao S. Bezwada
  • Publication number: 20130142752
    Abstract: The present invention relates to biodegradable polymers (e.g., polyesters and polyester amides) derived from functionalized biologically active compounds that can provide site specific delivery of bioactive compounds upon biodegradation in a controlled manner.
    Type: Application
    Filed: May 31, 2012
    Publication date: June 6, 2013
    Applicant: BEZWADA BIOMEDICAL, LLC
    Inventor: Rao S. Bezwada
  • Patent number: 8436201
    Abstract: The present invention relates to dephenolic compounds, an example of which is shown below, which are functionalized, and polymers formed from the same. Polymers formed from the functionalized diphenolics are expected to have controllable degradation profiles, enabling them to release an active component over a desired time range. The polymers are also expected to be useful in a variety of medical applications.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: May 7, 2013
    Assignee: Bezwada Biomedical, LLC
    Inventor: Rao S Bezwada
  • Patent number: 8409559
    Abstract: Compounds selected from: where DRUG-OH, DRUG-COOH and DRUG-NH2 are biologically active compounds; each X is independently selected from —CH2COO— (glycolic acid moiety), —CH(CH3)COO— (lactic acid moiety), —CH2CH2OCH2COO— (dioxanone moiety), —CH2CH2CH2CH2CH2COO— (caprolactone moiety), —(CH2)yCOO—, where y is 2-4 or 6-24 and —(CH2CH2O)zCH2COO—, where z is 2-24; each Y is independently selected from —COCH2O— (glycolic ester moiety), —COCH(CH3)O— (lactic ester moiety), —COCH2OCH2CH2O— (dioxanone ester moiety), —COCH2CH2CH2CH2CH2O— (caprolactone ester moiety), —CO(CH2)mO—, where m is 2-4 or 6-24 and —COCH2O(CH2CH2O)n— where n is between 2-24; R? is hydrogen, benzyl or an alkyl group, the alkyl group being either straight-chained or branched; and p is 1-6. Multi-functional compounds and drug dimers, oligomers and polymers are also disclosed.
    Type: Grant
    Filed: February 17, 2010
    Date of Patent: April 2, 2013
    Assignee: Bezwada Biomedical, Inc.
    Inventor: Rao S. Bezwada
  • Patent number: 8399696
    Abstract: This invention relates to the discovery of functionalized triclosan monomers and oligomers that, when incorporated into a substrate of, or applied as part of a coating to, medical devices and/or consumer products may extend the duration of antimicrobial properties to the medical devices and/or consumer products.
    Type: Grant
    Filed: July 29, 2012
    Date of Patent: March 19, 2013
    Assignee: Bezwada Biomedical, LLC
    Inventor: Rao S Bezwada
  • Publication number: 20130041045
    Abstract: The present invention relates to dephenolic compounds, an example of which is shown below, which are functionalized, and polymers formed from the same. Polymers formed from the functionalized diphenolics are expected to have controllable degradation profiles, enabling them to release an active component over a desired time range. The polymers are also expected to be useful in a variety of medical applications.
    Type: Application
    Filed: September 5, 2012
    Publication date: February 14, 2013
    Applicant: BEZWADA BIOMEDICAL, LLC
    Inventor: Rao S. Bezwada
  • Patent number: 8372882
    Abstract: The present invention relates to a compound of the formula: R-AR—O—Y—R? Wherein R represents one or more members selected from H, alkoxy, benzyloxy, aldehyde, halogen, carboxylic acid, —NO2, —NH2, —NHCOCH3, and —NH—Y—R?, which is attached directly to AR or attached through an aliphatic chain. The carboxylic acid moiety in R includes but is not limited to the following carboxylic acids: benzoic acids, cinnamic acids, ferulic acid, caffeic acid, syringic acid, salicyclic acid, vanillic acid, phenylacetic acids, phenylpropionic acids, and sinapinic acid. -AR—O— is a biologically active phenolic moiety comprising 1 to 6 substituted or unsubstituted aryl rings that are directly bonded to each other, fused together, or joined through a linking group.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: February 12, 2013
    Assignee: Bezwada Biomedical, LLC
    Inventor: Rao S. Bezwada
  • Patent number: 8367747
    Abstract: Novel bioabsorbable and/or biocompatible polyurethanes, polyureas, polyamideurethanes and polyureaurethanes with tunable physical, mechanical properties and hydrolytic degradation profiles are provided for use in biomedical applications such as stents, stent coatings, scaffolds, foams, and films. The disclosed polymers may be derived from biocompatible and/or bioabsorbable polyisocyanates. The present invention also relates to new and improved methods for the preparation of the biocompatible and/or bioabsorbable polyisocyanates.
    Type: Grant
    Filed: May 22, 2009
    Date of Patent: February 5, 2013
    Assignee: Bezwada Biomedical, LLC
    Inventor: Rao S. Bezwada
  • Patent number: 8367108
    Abstract: The present invention relates to compound of formula I, which are functionalized, non-phenolic amino acids, and polymers formed from the same. Polymers formed from the functionalized amino acids are expected to have controllable degradation profiles, enabling them to release an active component over a desired time range. The polymers are also expected to be useful in a variety of medical applications.
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: February 5, 2013
    Assignee: Bezwada Biomedical, LLC
    Inventor: Rao S. Bezwada
  • Patent number: 8318973
    Abstract: The present invention relates to compounds of formula I, which are functionalized phenolic compounds, and polymers formed from the same. Ar—[O—(X)p—R?]q??I Polymers formed from the functionalized phenolics are expected to have controllable degradation profiles, enabling them to release an active component over a desired time range. The polymers are also expected to be useful in a variety of medical applications.
    Type: Grant
    Filed: October 16, 2006
    Date of Patent: November 27, 2012
    Assignee: Bezwada Biomedical, LLC
    Inventor: Rao S. Bezwada