Patents by Inventor Fidelis C. Onwumere

Fidelis C. Onwumere 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).

  • Patent number: 7390666
    Abstract: This invention relates to methods for determining whether or not to discard a sample of oil based on the presence of polar compounds in the oil and devices to be used therewith. In a preferred embodiment a test strip including an adsorbent affixed to a backing is spotted with a polar indicator. A sample of oil is positioned on a heat conducting device supporting the test strip and the oil is allowed to migrate over the adsorbent material thereby displacing the polar indicator in an amount related to the amount of polar compounds in the oil. This displacement is correlated to the amount of polar compounds in the sample.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: June 24, 2008
    Assignee: 3M Innovative Properties Company
    Inventors: Fidelis C. Onwumere, Robert A. Pranis, Jack G. Truong
  • Patent number: 7132079
    Abstract: This invention relates to methods for determining whether or not to discard a sample of oil based on the presence of polar compounds in the oil and devices to be used therewith. In a preferred embodiment a test strip comprising an adsorbent affixed to a backing is spotted with a polar indicator. A sample of oil is positioned on a heat conducting device supporting the test strip and the oil is allowed to migrate over the adsorbent material thereby displacing the polar indicator in an amount related to the amount of polar compounds in the oil. This displacement is correlated to the amount of polar compounds in the sample.
    Type: Grant
    Filed: June 24, 2002
    Date of Patent: November 7, 2006
    Assignee: 3M Innovative Properties Company
    Inventors: Fidelis C. Onwumere, Robert A. Pranis, Jack G. Truong
  • Patent number: 6837873
    Abstract: A method and an apparatus for forming a one-piece introducer in which at least one finger tab is formed at one end of a tube. The apparatus is formed from a molton polymer fed into the cavity of a mold. The cavity of the mold has a portion that forms a tube and a portion that forms a tab.
    Type: Grant
    Filed: December 29, 2000
    Date of Patent: January 4, 2005
    Assignee: Medex, Inc.
    Inventors: William F. Polley, Fidelis C. Onwumere
  • Patent number: 6780472
    Abstract: A monomer useful in the formulation of a radiation curable coatable composition comprises (a) polyfunctional isocyanurate having at least three terminal reactive groups reacted with (b) hydroxyalkyl acrylate and (c) tertiary amine alcohol in a molar ratio of a:b:c of about 1:1-2.5:0.5-2, wherein b+c is at least 3 and no greater than the total number of terminal reactive groups of (a). The monomer is included in a radiation curable coatable composition suitable for use as a floor finish and in a floor finishing system comprising the foregoing coatable composition with a primer. A method for the treatment of a substrate using the floor finish and the floor finishing system is also described.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: August 24, 2004
    Assignee: 3M Innovative Properties Company
    Inventors: Steven J. Hamrock, Fidelis C. Onwumere, Bradford B. Wright, Michael A. Yandrasits
  • Patent number: 6623823
    Abstract: An apparatus and method to produce radiopaque medical implants such as catheters, stents, or other implants. A composition of a radiopaque brominated polyurethane coat and a polyurethane tubing core is formed. In one embodiment, the polyurethane coat includes a diisocyanate and a brominated diol having a bromine concentration of 30% or more. The coat is applied to the elastomeric polyurethane tubing core surface. The medical implant takes advantage of employing a brominated radiopaque polyurethane with the tensile properties, for example of flexibility and kink resistance, of the elastomeric thermoplastic polyurethane tubing core without degrading these desirable characteristics.
    Type: Grant
    Filed: December 31, 1998
    Date of Patent: September 23, 2003
    Assignee: Ethicon, Inc.
    Inventor: Fidelis C. Onwumere
  • Publication number: 20030087981
    Abstract: A monomer useful in the formulation of a radiation curable coatable composition comprises (a) polyfunctional isocyanurate having at least three terminal reactive groups reacted with (b) hydroxyalkyl acrylate and (c) tertiary amine alcohol in a molar ratio of a:b:c of about 1:1-2.5:0.5-2, wherein b+c is at least 3 and no greater than the total number of terminal reactive groups of (a). The monomer is included in a radiation curable coatable composition suitable for use as a floor finish and in a floor finishing system comprising the foregoing coatable composition with a primer. A method for the treatment of a substrate using the floor finish and the floor finishing system is also described.
    Type: Application
    Filed: December 19, 2001
    Publication date: May 8, 2003
    Applicant: 3M Innovative Properties Company
    Inventors: Steven J. Hamrock, Fidelis C. Onwumere, Bradford B. Wright, Michael A. Yandrasits
  • Publication number: 20030027346
    Abstract: This invention relates to methods for determining whether or not to discard a sample of oil based on the presence of polar compounds in the oil and devices to be used therewith. In a preferred embodiment a test strip comprising an adsorbent affixed to a backing is spotted with a polar indicator. A sample of oil is positioned on a heat conducting device supporting the test strip and the oil is allowed to migrate over the adsorbent material thereby displacing the polar indicator in an amount related to the amount of polar compounds in the oil. This displacement is correlated to the amount of polar compounds in the sample.
    Type: Application
    Filed: June 24, 2002
    Publication date: February 6, 2003
    Applicant: 3M Innovative Properties Company
    Inventors: Fidelis C. Onwumere, Robert A. Pranis, Jack G. Truong
  • Patent number: 6436713
    Abstract: The invention relates to methods for determining whether or not to discard a sample of oil based on the presence of polar compounds in oil and devices to be used to determine the presence of polar compounds in oil. In a preferred embodiment, a test strip comprising an adsorbent affixed to a backing is spotted with a polar indicator. A sample of oil is positioned on a heat conducting device supporting the test strip and the oil is allowed to migrate over the adsorbent material, thereby displacing the polar indicator in an amount related to the amount of polar compounds in the oil. This displacement is correlated to the amount of polar compounds in the sample.
    Type: Grant
    Filed: December 20, 1999
    Date of Patent: August 20, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Fidelis C. Onwumere, Robert A. Pranis, Jack G. Truong
  • Publication number: 20010009988
    Abstract: According to one aspect of the invention a method is provided for making a combination hub and catheter. A material is molded into a body having at least a first hub, and at least a first nose extending from the first hub. The first nose is then elongated into a catheter.
    Type: Application
    Filed: February 8, 2001
    Publication date: July 26, 2001
    Inventors: Adel Kafrawy, Fidelis C. Onwumere
  • Patent number: 6200338
    Abstract: A medical implant, tubing and method to provide enhanced X-ray detection intensity in catheters, stents, vascular grafts or other tubular implants. In one aspect the medical implant includes a visually transparent radiopaque polymer and a filler material having a radiopaque component.
    Type: Grant
    Filed: December 31, 1998
    Date of Patent: March 13, 2001
    Assignee: Ethicon, Inc.
    Inventors: Donald D. Solomon, Fidelis C. Onwumere
  • Patent number: 6197844
    Abstract: A monomer useful in the formulation of a radiation curable coatable composition comprises (a) polyfunctional isocyanurate having at least three terminal reactive groups reacted with (b) hydroxyalkyl acrylate and (c) tertiary amine alcohol in a molar ratio of a:b:c of about 1:1-2.5:0.5-2, wherein b+c is at least 3 and no greater than the total number of terminal reactive groups of (a). The monomer is included in a radiation curable coatable composition suitable for use as a floor finish and in a floor finishing system comprising the foregoing coatable composition with a primer. A method for the treatment of a substrate using the floor finish and the floor finishing system is also described.
    Type: Grant
    Filed: February 4, 1999
    Date of Patent: March 6, 2001
    Assignee: 3M Innovative Properties Company
    Inventors: Steven J. Hamrock, Fidelis C. Onwumere, Bradford B. Wright, Michael A. Yandrasits
  • Patent number: 6192568
    Abstract: A method is provided for making a combination hub and catheter. A material is molded in a mold into a body having at least a first hub, and at least a first nose extending from the first hub. The first nose is then elongated into a catheter by moving first and second components of the mold away from one another.
    Type: Grant
    Filed: March 11, 1999
    Date of Patent: February 27, 2001
    Assignee: Ethicon, Inc.
    Inventors: Adel Kafrawy, Fidelis C. Onwumere
  • Patent number: 5637559
    Abstract: The present invention is drawn toward compositions and methods of using same, the compositions comprising (in diluted form):a) an effective amount of a phenyl substituted alkyl alcohol having a water solubility of at least 0.1 weight percent (preferably benzyl alcohol);b) a coupler; andc) water,wherein the amount of the coupler is at least 3.0 times the amount necessary to completely solubilize the phenyl substituted alkyl alcohol in the water. Preferred couplers are the salt of a monofunctional water-soluble amine and an organic acid comprising at least one water-insoluble organic acid having from 6-10 carbon atoms. Methods of removing coatings such as standard urethane/acrylic sealer finishes from floors using the inventive compositions are also described.
    Type: Grant
    Filed: November 18, 1994
    Date of Patent: June 10, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Francis J. Koreltz, James A. McDonell, Fidelis C. Onwumere, Toshihiro Funabiki
  • Patent number: 5585407
    Abstract: Water-based coatable compositions for application to a substrate to inhibit the growth of microbes for extended periods of time, durable removable biocidal polymeric coatings resulting from such coatable compositions, a method of protecting a substrate from the growth of microbes and substrates resistant to such growth are described. The coatable compositions comprise an acrylate emulsion polymer comprising the reaction product of one or more acrylate or methacrylate monomers and one or more carboxylic acid monomers, an organoalkoxysilane, an effective amount of biocide, plasticizer and water. The coatable composition may be applied to the surface of a substrate and allowed to dry to provide durable adherent polymeric coatings which slowly release biocide to the surrounding surface for extended periods of time.
    Type: Grant
    Filed: July 13, 1995
    Date of Patent: December 17, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Vinu Patel, Fidelis C. Onwumere
  • Patent number: 5491210
    Abstract: The invention provides a polymer adapted for use in melt processes, the polymer having a thermally reversible bond which is adapted to evanesce at an elevated temperature and revert to a thermally reversible bond upon cooling to ambient temperature so that the polymer is adapted, upon being heated to the elevated temperature, to dissociate into melt processable polymeric fragments and, upon being cooled to ambient temperature, to re-associate. The thermally reversible bond is a bond that is capable of evanescing at a temperature which is lower than the degradation temperature of the polymer fragments. The thermally reversible bond may be, for example, a thermally reversible aromatic urethane bond.
    Type: Grant
    Filed: April 21, 1989
    Date of Patent: February 13, 1996
    Assignee: Kimberly-Clark Corporation
    Inventors: Fidelis C. Onwumere, Jose F. Pazos
  • Patent number: 5354808
    Abstract: Ungelled, aqueous dispersions of silane-terminated partially crosslinked polyurethane polymers are described which are the reaction product of A) an isocyanate-containing prepolymer formed from: (i) a molar excess of organic polyisocyanate sufficient to promote substantially equal access to isocyanate groups; (ii) active hydrogen-containing material; (iii) sterically hindered amines; (iv) emulsifying monomer; B) chain-extending monomer; C) an organic compound having a pKb of at most about 7; and D) a silane coupling agent represented by the general formula ASi(OR.sup.2).sub.3 and present in an amount sufficient to partially crosslink the polyurethane resin but insufficient to gel the dispersion, provide advantages over previously known polyurethanes used as surface coatings. The hindered amine allows surface coatings incorporating the polyurethanes to be easily removed by aqueous compositions having pH between about 2 and 5. Methods of making the prepolymers, polymers, and dispersions are also presented.
    Type: Grant
    Filed: December 8, 1992
    Date of Patent: October 11, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Fidelis C. Onwumere, Kurt C. Frisch, Jr.
  • Patent number: 5328698
    Abstract: A shaped medical article of a polymeric substrate is extrusion coated with a composition which includes a bioactive agent dispersed in a matrix polymer. Preferred bioactive agents are temperature sensitive agents which undergo thermal decomposition at a temperature above the processing temperature of the matrix polymer. Preferred matrix polymers have a melting point of about 100.degree. C. or lower.
    Type: Grant
    Filed: August 6, 1990
    Date of Patent: July 12, 1994
    Assignee: Becton, Dickinson and Company
    Inventors: Fidelis C. Onwumere, Donald D. Solomon, Stanley C. Wells
  • Patent number: 5281677
    Abstract: A thermoplastic polyurethane chain extended with an alkylenediol is blended with a thermoplastic polyurethane chain extended with an oxyalkylene qlycol oligomer. The blend is extruded into a catheter tubing having sufficient initial stiffness for satisfactory insertion in a patient and a high degree of softening for safe positioning and long term catheterization procedures without the risk of vessel wall perforation.
    Type: Grant
    Filed: September 3, 1992
    Date of Patent: January 25, 1994
    Assignee: Becton, Dickinson and Company
    Inventors: Theo O. Onwunaka, Fidelis C. Onwumere, James M. Lambert
  • Patent number: 5250649
    Abstract: Melt processable polyurethaneureas are prepared from a diisocyanate, a polyglycol, a diol chain extender and an amine terminated polyether. Water may be included as a reactant, and the polymer may contain an additive such as a radiopaque material and a coating of an antithrombogenic agent or an antimicrobial agent. The invention includes a one-pot bulk polymerization method for preparation of the polymers.
    Type: Grant
    Filed: June 29, 1990
    Date of Patent: October 5, 1993
    Assignee: Becton, Dickinson and Company
    Inventors: Fidelis C. Onwumere, Donald D. Solomon
  • Patent number: 5219974
    Abstract: The invention provides fibers and sheets formed from a polymer having a thermally reversible bond which is adapted to evanesce at an elevated temperature and revert to a thermally reversible bond upon cooling to ambient temperature so that said polymer is adapted, upon being heated to said elevated temperature, to dissociate into melt processable polymer fragments and, upon being cooled from said elevated temperature to ambient temperature, to re-associate. The polymer fibers may be meltblown fibers which may be formed into a coherent nonwoven web or sheet. The meltblown fibers may include microfibers. The meltblown web may also include at least one type of secondary fiber, particulates or a mixture of fibers and particulates.
    Type: Grant
    Filed: April 21, 1989
    Date of Patent: June 15, 1993
    Assignee: Kimberly-Clark Corporation
    Inventors: Fidelis C. Onwumere, Jose F. Pazos