Patents by Inventor Alessandro Corona

Alessandro Corona 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: 5470492
    Abstract: Dryer-activated fabric softening articles having improved spun-bonded polyester substrates having improved feel characteristics as compared to conventional polyester substrates and/or feel characteristics that are not significantly different from conventional rayon substrates, after use in an automatic clothes dryer, said articles comprising:(A) at least about 5% fabric conditioning composition comprising fabric conditioning active; and(B) a polyester non-woven fabric substrate prepared from a polyester fiber having a denier of from about 2 to about 6, said substrate having a basis weight of from about 0.52 oz/yd.sup.2 to about 0.58 oz/yd.sup.2, a thickness of from about 0.16 mm to about 0.22 mm, and, preferably, a tear strength of at least about 3 lbs/in.sup.2, preferably from about 4 to about 7 lbs/in.sup.2 in the cross direction and from about 3.1 to about 6 lbs/in.sup.2 in the machine direction, and "belt fuzz" and "jet fuzz" grades, as described herein, of from about 1.8 to about 2.
    Type: Grant
    Filed: January 4, 1995
    Date of Patent: November 28, 1995
    Assignee: The Procter & Gamble Company
    Inventors: Stephen L. Childs, Alvin M. Robertson, Alessandro Corona, III, Karl J. Russ
  • Patent number: 5376287
    Abstract: Dryer-activated fabric softening compositions and articles having improved antistatic effects, for use in an automatic clothes dryer comprising: (A) at least about 5% of highly ethoxylated, preferably at least 5 ethylene oxide (EO) groups per molecule, sugar derivative containing at least one long hydrophobic moiety per molecule; and, preferably, (B) from about 10% to about 95%, of carboxylic acid salt of tertiary amine. The amount of (A) present is at least sufficient to provide improved antistatic effects and is not so much as to cause the composition to have unacceptable physical characteristics, e.g., stickiness. The active components (A) and (B) can contain unsaturation to provide improved antistatic benefits.
    Type: Grant
    Filed: August 6, 1993
    Date of Patent: December 27, 1994
    Assignee: The Procter & Gamble Company
    Inventors: Thomas A. Borcher, Sr., Alessandro Corona, III, Willis A. Sturdivant, Stephanie L. Sung, David M. Wojcik
  • Patent number: 5348667
    Abstract: Cyclodextrin complexes are prepared utilizing processes in which the cyclodextrin/active complex is prepared under concentrated reaction conditions in which there is no more than about 40% solvent, e.g., water, with mechanical working, to provide a complex ultimate particle size of less than about 12 microns and the resulting complex reaction mixture is incorporated, preferably without further operation, into at least one fabric conditioning material, preferably cationic fabric conditioning active, preferably in liquid (molten) form, preferably at a temperature between about 60 and about 95.degree. C., and mechanically worked to reduce complex aggregate particle size below about 200 microns. The resulting complex/fabric conditioning material mixture is used to prepare, e.g., dryer-added fabric softener article, e.g., sheet. The mixture of complex and fabric softener material preferably contains a small amount of an anionic surfactant to help avoid deposition of, e.g.
    Type: Grant
    Filed: October 8, 1993
    Date of Patent: September 20, 1994
    Assignee: The Procter & Gamble Company
    Inventors: Dennis R. Bacon, Thomas A. Borcher, Sr., Alessandro Corona, III, Clyde D. Palmer, Toan Trinh