Patents by Inventor Alvin M. Robertson

Alvin M. Robertson 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