Patents by Inventor Bhuvenesh C. Goswami
Bhuvenesh C. Goswami 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: 5582912Abstract: The present invention resides in ignition resistant non-linear carbonaceous fiber or fiber tow having a reversible deflection ratio of greater than 1:1 but equal to or less than 1.2:1. The fibers have a multiplicity of crimps along their length with a crimp frequency on the order of from 6 to 15 crimps per inch. Fibers of the invention have an elongatability of from about 2 to about 9%, a pseudo-elongatability of from about 0.2 to about 18%, and a tenacity without a loss of elongation on the order of at least 6 g/d. The carbonaceous fibers can be used, for example, as thermal insulation and/or fire resistant insulation in vehicles, building structures or clothing in furniture coverings, carpets, and the like, and can be used alone or blended with other fibers to form fine yarns.Type: GrantFiled: May 3, 1994Date of Patent: December 10, 1996Assignee: The Dow Chemical CompanyInventors: Francis P. McCullough, Jr., Stephen E. Hill, Bhuvenesh C. Goswami
-
Patent number: 5503929Abstract: A process for preparing a non-flammable linear non-graphitic carbonaceous polymeric fiber, yarn or tow having improved elongability containing the step of heat treating a linear stabilized polymeric fiber, yarn or tow having an LOI greater than 40 without any substantial tension or stress in an inert non-oxidizing atmosphere at a temperature so as to irreversibly heat set said fiber yarn or tow.Type: GrantFiled: May 3, 1994Date of Patent: April 2, 1996Inventors: Francis P. McCullough, Jr., R. Vernon Snelgrove, Bhuvenesh C. Goswami
-
Patent number: 5407739Abstract: An ignition resistant fibrous material for use as insulation. The material comprises a multiplicity of meltblown or spunbonded thermoplastic filaments in combination with a multiplicity of nonlinear, nongraphitic carbonaceous fibers. The carbonaceous fibers have a Young's modulus of greater than 300,000 psi and reversible deflection ratio of greater than 1.2:1.Type: GrantFiled: July 28, 1993Date of Patent: April 18, 1995Assignee: The Dow Chemical CompanyInventors: Francis P. McCullough, Bhuvenesh C. Goswami, Robert T. Patton
-
Patent number: 5399423Abstract: An ignition resistant fibrous material for use as insulation. The material comprises a multiplicity of meltblown or spunbonded thermoplastic filaments in combination with a multiplicity of nonlinear, nongraphitic carbonaceous fibers. The carbonaceous fibers have a Young's modulus of greater than 300,000 psi and reversible deflection ratio that is equal to or less than 1.2:1.Type: GrantFiled: July 28, 1993Date of Patent: March 21, 1995Assignee: The Dow Chemical CompanyInventors: Francis P. McCullough, Bhuvenesh C. Goswami, Robert T. Patton
-
Patent number: 5356707Abstract: The present invention resides in ignition resistant non-linear carbonaceous fiber or fiber tow having a reversible deflection ratio equal to or less than 1.2:1. The fibers have a multiplicity of crimps along their length with a crimp frequency on the order of from 6 to 15 crimps per inch. Fibers of the invention have improved elongatability of from about 2 to about 9%, a pseudo-elongatability of from about 0.2 to about 18%, and a tenacity without a loss of elongation on the order of at least 6 g/d. The carbonaceous fibers can be used, for example, as thermal insulation and/or fire resistant insulation in vehicles, building structures or clothing in furniture coverings, carpets, and the like, and can be blended with other fibers to form fine yarns.Type: GrantFiled: March 5, 1993Date of Patent: October 18, 1994Assignee: The Dow Chemical CompanyInventors: Francis P. McCullough, Jr., Bhuvenesh C. Goswami, Stephen E. Hill
-
Patent number: 5328764Abstract: A process for preparing a non-flammable linear non-graphitic carbonaceous polymeric fiber, yarn or tow having improved elongability which comprises the step of heat treating a linear stabilized polymeric fiber, yarn or tow having an LOI greater than 40 without any substantial tension or stress in an inert non-oxidizing atmosphere at a temperature so as to irreversibly heat set said fiber yarn or tow.Type: GrantFiled: April 30, 1992Date of Patent: July 12, 1994Assignee: The Dow Chemical CompanyInventors: Francis P. McCullough, Jr., R. Vernon Snelgrove, Bhuvenesh C. Goswami
-
Patent number: 5223324Abstract: A flame retardant polymeric foam having a flame retarding amount of non-graphitic carbonaceous materials having an LOI value greater than 40.Type: GrantFiled: July 21, 1989Date of Patent: June 29, 1993Assignee: The Dow Chemical CompanyInventors: Francis P. McCullough, Jr., Bhuvenesh C. Goswami, R. Vernon Snelgrove
-
Patent number: 4987664Abstract: A process for producing an interlocked fibrous structure useful as a thermal insulating and/or sound absorbing structure comprising at least one batting of non-flammable carbonaceous fibers, by the steps comprising implanting said batting with non-carbonaceous polymeric fibers and then heat treating the structure in an inert atmosphere so as to transform said non-carbonaceous fibers into substantially permanently set carbonaceous fibers.Type: GrantFiled: October 18, 1989Date of Patent: January 29, 1991Assignee: The Dow Chemical CompanyInventors: Francis P. McCullough, Jr., R. Vernon Snelgrove, Bhuvenesh C. Goswami
-
Patent number: 4957807Abstract: The invention resides in a nonlinear heat set aromatic polyamide fiber having a reversible deflection of greater than 1.2:1 at ambient temperatures, an aspect ratio of greater than 10:1, and a bending strain value less than 50%, and the method of preparing said fiber.Type: GrantFiled: November 21, 1989Date of Patent: September 18, 1990Assignee: The Dow Chemical CompanyInventors: Francis P. McCullough, Jr., Bhuvenesh C. Goswami, R. Vernon Snelgrove, David M. Hall
-
Patent number: 4902561Abstract: A process for producing an interlocked fibrous structure useful as a thermal insulating and/or sound absorbing structure comprising at least one batting of non-flammable carbonaceous fibers, by the steps comprising implanting said batting with non-carbonaceous polymeric fibers and then heat treating the structure in an inert atmosphere so as to transform said non-carbonaceous fibers into substantially permanently set carbonaceous fibers.Type: GrantFiled: April 27, 1989Date of Patent: February 20, 1990Assignee: The Dow Chemical CompanyInventors: Francis P. McCullough, Jr., R. Vernon Snelgrove, Bhuvenesh C. Goswami
-
Patent number: 4869962Abstract: A non-flammable light weight non-carcinogenic asbestos-like thermal insulation and flame barrier structure comprising at least one layer of carbonaceous fibers and a suitable binder, said carbonaceous fibers being non-linear and having a reversible deflection ratio of greater than 1.2:1, an aspect ratio of greater then 10:1 and an LOI value of greater than 40.Type: GrantFiled: January 29, 1988Date of Patent: September 26, 1989Assignee: The Dow Chemical CompanyInventors: Francis P. McCullough, Jr., Eckel R. Lane, Bhuvenesh C. Goswami, David M. Hall
-
Patent number: 4857394Abstract: A flame retardant polymeric foam having a flame retarding amount of heat set carbonaceous fibers derived from stabilized acrylic fibers or pitch based fibers, said fibers having an LOI value greater than 40.Type: GrantFiled: January 29, 1988Date of Patent: August 15, 1989Assignee: The Dow Chemical CompanyInventors: Francis P. McCullough, Jr., R. Vernon Snelgrove, Bhuvenesh C. Goswami