Patents by Inventor Charles E. Day

Charles E. Day 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).

  • Fibrous sheet with improved properties
    Patent number: 12043963
    Abstract: A method for producing a foam-formed multilayered substrate that includes producing an aqueous-based foam including at least 3% by weight non-straight synthetic binder fibers, wherein the non-straight synthetic binder fibers have an average length greater than 2 mm; forming together a wet sheet layer from the aqueous-based foam and a cellulosic fiber layer, wherein the cellulosic fiber layer includes at least 60 percent by weight cellulosic fibers; and drying the combined layers to obtain the foam-formed multilayer substrate. A multilayered substrate includes a first layer including at least 60 percent by weight non-straight synthetic binder fibers having an average length greater than 2 mm; and a second layer including at least 60 percent by weight cellulosic fiber, wherein the first layer is in a facing relationship with the second layer, and wherein the multilayered substrate has a wet/dry tensile ratio of at least 60%.
    Type: Grant
    Filed: January 11, 2022
    Date of Patent: July 23, 2024
    Inventors: Deborah J. Calewarts, Jian Qin, Charles W. Colman, Cathleen M. Uttecht, Donald E. Waldroup, Francis P. Abuto, Jenny L. Day, Stephen M. Lindsay
  • Phosphate-Binding Magnesium Salts And Uses Thereof
    Publication number: 20180161365
    Abstract: The present invention provides, among other things, compositions and methods suitable for the treatment of hyperphosphatemia based on phosphate-binding magnesium salts. In some embodiments, the present invention provides compositions and methods suitable for the treatment of hyperphosphatemia based on the combination of phosphate-binding magnesium and calcium salts.
    Type: Application
    Filed: February 12, 2018
    Publication date: June 14, 2018
    Inventors: Robert L. Lewis, Charles E. Day
  • Phosphate-binding magnesium salts and uses thereof
    Patent number: 9889157
    Abstract: The present invention provides, among other things, compositions and methods suitable for the treatment of hyperphosphatemia based on phosphate-binding magnesium salts. In some embodiments, the present invention provides compositions and methods suitable for the treatment of hyperphosphatemia based on the combination of phosphate-binding magnesium and calcium salts.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: February 13, 2018
    Assignee: Cypress Pharmaceuticals, Inc.
    Inventors: Robert L. Lewis, Charles E. Day
  • Phosphate-Binding Magnesium Salts And Uses Thereof
    Publication number: 20170202875
    Abstract: The present invention provides, among other things, compositions and methods suitable for the treatment of hyperphosphatemia based on phosphate-binding magnesium salts. In some embodiments, the present invention provides compositions and methods suitable for the treatment of hyperphosphatemia based on the combination of phosphate-binding magnesium and calcium salts.
    Type: Application
    Filed: April 3, 2017
    Publication date: July 20, 2017
    Inventors: Robert L. Lewis, Charles E. Day
  • Phosphate-binding magnesium salts and uses thereof
    Patent number: 9610267
    Abstract: The present invention provides, among other things, compositions and methods suitable for the treatment of hyperphosphatemia based on phosphate-binding magnesium salts. In some embodiments, the present invention provides compositions and methods suitable for the treatment of hyperphosphatemia based on the combination of phosphate-binding magnesium and calcium salts.
    Type: Grant
    Filed: May 16, 2016
    Date of Patent: April 4, 2017
    Assignee: Cypress Pharmaceuticals, Inc.
    Inventors: Robert L. Lewis, Charles E. Day
  • Phosphate-Binding Magnesium Salts And Uses Thereof
    Publication number: 20160256420
    Abstract: The present invention provides, among other things, compositions and methods suitable for the treatment of hyperphosphatemia based on phosphate-binding magnesium salts. In some embodiments, the present invention provides compositions and methods suitable for the treatment of hyperphosphatemia based on the combination of phosphate-binding magnesium and calcium salts.
    Type: Application
    Filed: May 16, 2016
    Publication date: September 8, 2016
    Inventors: Robert L. Lewis, Charles E. Day
  • Phosphate-binding magnesium salts and uses thereof
    Patent number: 9339481
    Abstract: The present invention provides, among other things, compositions and methods suitable for the treatment of hyperphosphatemia based on phosphate-binding magnesium salts. In some embodiments, the present invention provides compositions and methods suitable for the treatment of hyperphosphatemia based on the combination of phosphate-binding magnesium and calcium salts.
    Type: Grant
    Filed: April 3, 2013
    Date of Patent: May 17, 2016
    Assignee: Cypress Pharmaceuticals, Inc.
    Inventors: Robert L. Lewis, Charles E. Day
  • PHOSPHATE-BINDING MAGNESIUM SALTS AND USES THEREOF
    Publication number: 20120282352
    Abstract: The present invention provides, among other things, compositions and methods suitable for the treatment of hyperphosphatemia based on phosphate-binding magnesium salts. In some embodiments, the present invention provides compositions and methods suitable for the treatment of hyperphosphatemia based on the combination of phosphate-binding magnesium and calcium salts.
    Type: Application
    Filed: July 9, 2012
    Publication date: November 8, 2012
    Applicant: CYPRESS PHARMACEUTICAL, INC.
    Inventors: Robert L. Lewis, Charles E. Day
  • PHOSPHATE-BINDING CHITOSAN AND USES THEREOF
    Publication number: 20120277183
    Abstract: The present invention provides compositions and methods for removing phosphate from a subject using chitosan. The present invention also provides compositions and methods for treating hyperphosphatemia based on phosphate-binding chitosan.
    Type: Application
    Filed: July 9, 2012
    Publication date: November 1, 2012
    Applicant: CYPRESS PHARMACEUTICAL, INC.
    Inventors: Robert L. Lewis, Charles E. Day
  • Phosphate-binding magnesium salts and uses thereof
    Patent number: 8247000
    Abstract: The present invention provides, among other things, compositions and methods suitable for the treatment of hyperphosphatemia based on phosphate-binding magnesium salts. In some embodiments, the present invention provides compositions and methods suitable for the treatment of hyperphosphatemia based on the combination of phosphate-binding magnesium and calcium salts.
    Type: Grant
    Filed: April 10, 2009
    Date of Patent: August 21, 2012
    Assignee: Cypress Pharmaceutical, Inc.
    Inventors: Robert L. Lewis, Charles E. Day
  • Phosphate-binding magnesium salts and uses thereof
    Patent number: 8236358
    Abstract: The present invention provides, among other things, compositions and methods suitable for the treatment of hyperphosphatemia based on phosphate-binding magnesium salts. In some embodiments, the present invention provides compositions and methods suitable for the treatment of hyperphosphatemia based on the combination of phosphate-binding magnesium and an enteric coating.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: August 7, 2012
    Assignee: Cypress Pharmaceutical, Inc.
    Inventors: Robert L. Lewis, Charles E. Day
  • PHOSPHATE-BINDING MAGNESIUM SALTS AND USES THEREOF
    Publication number: 20120195964
    Abstract: The present invention provides, among other things, compositions and methods suitable for the treatment of hyperphosphatemia based on phosphate-binding magnesium salts. In some embodiments, the present invention provides compositions and methods suitable for the treatment of hyperphosphatemia based on the combination of phosphate-binding magnesium and an enteric coating.
    Type: Application
    Filed: April 12, 2012
    Publication date: August 2, 2012
    Applicant: CYPRESS PHARMACEUTICAL, INC.
    Inventors: Robert L. Lewis, Charles E. Day
  • Phosphate-binding chitosan and uses thereof
    Patent number: 7943597
    Abstract: The present invention provides compositions and methods for removing phosphate from a subject using chitosan. The present invention also provides compositions and methods for treating hyperphosphatemia based on phosphate-binding chitosan.
    Type: Grant
    Filed: April 8, 2008
    Date of Patent: May 17, 2011
    Assignee: Cypress Pharmaceutical, Inc.
    Inventors: Robert L. Lewis, Charles E. Day
  • PHOSPHATE-BINDING MAGNESIUM SALTS AND USES THEREOF
    Publication number: 20090269399
    Abstract: The present invention provides, among other things, compositions and methods suitable for the treatment of hyperphosphatemia based on phosphate-binding magnesium salts. In some embodiments, the present invention provides compositions and methods suitable for the treatment of hyperphosphatemia based on the combination of phosphate-binding magnesium and calcium salts.
    Type: Application
    Filed: April 10, 2009
    Publication date: October 29, 2009
    Applicant: Cypress Pharmaceutical, Inc.
    Inventors: Robert L. Lewis, Charles E. Day
  • PHOSPHATE-BINDING CHITOSAN AND USES THEREOF
    Publication number: 20090253652
    Abstract: The present invention provides compositions and methods for removing phosphate from a subject using chitosan. The present invention also provides compositions and methods for treating hyperphosphatemia based on phosphate-binding chitosan.
    Type: Application
    Filed: May 6, 2009
    Publication date: October 8, 2009
    Applicant: Cypress Pharmaceutical, Inc.
    Inventors: Robert L. Lewis, Charles E. Day
  • PHOSPHATE-BINDING CHITOSAN AND USES THEREOF
    Publication number: 20080193521
    Abstract: The present invention provides compositions and methods for removing phosphate from a subject using chitosan. The present invention also provides compositions and methods for treating hyperphosphatemia based on phosphate-binding chitosan.
    Type: Application
    Filed: April 8, 2008
    Publication date: August 14, 2008
    Applicant: CYPRESS PHARMACEUTICAL, INC.
    Inventors: Robert L. Lewis, Charles E. Day
  • All-natural antacid composition
    Publication number: 20030219501
    Abstract: Disclosed is an antacid composition comprising ellagitannin and glycine. The composition is useful to relieve gastric hyperacidity or gastroesophageal reflux disorder.
    Type: Application
    Filed: May 24, 2002
    Publication date: November 27, 2003
    Inventor: Charles E. Day
  • Method of increasing pharmaceutical market
    Publication number: 20030060483
    Abstract: Disclosed is a method of increasing the market for an existing pharmaceutical including the step of making a reformulated pharmaceutical by combining the existing pharmaceutical with a nondegradable synthetic polymer not substantially absorbed from the human alimentary canal.
    Type: Application
    Filed: September 24, 2001
    Publication date: March 27, 2003
    Inventor: Charles E. Day
  • Antiflatulent composition
    Patent number: 6200605
    Abstract: An antiflatulent composition is disclosed which comprises a polysaccharide and a preservative. The composition is useful to control gas formation at the site of generation of flatulence.
    Type: Grant
    Filed: October 29, 1998
    Date of Patent: March 13, 2001
    Inventor: Charles E. Day
  • Antacid co-polymer of guanidine and polyethylenimine
    Patent number: 6040315
    Abstract: Herein is disclosed how to make and to use a nonmetallic antacid composition which is the product of the co-polymerization of guanidine and polyethylenimine. The resultant polymer is useful as an antacid.
    Type: Grant
    Filed: October 29, 1998
    Date of Patent: March 21, 2000
    Inventor: Charles E. Day