Frank P Calabrese

7031589, Apr 18, 2006

May 17, 2004

10/847058

Frank Calabrese - South Elgin IL, US
Kaushik Chakrabarty - Gahnna OH, US
Arturo Hale - New York NY, US
Robert C. Moore - Roswell GA, US

Furukawa Electric North America - Norcross GA

G02B 6/00

385140, 359288

A fiber optic attenuating element is formed of a thermoplastic polymer having (i) a refractive index in the range of between about 1. 42 and 1. 47 as measured at a temperature of 23 C. and a wavelength of 1550 nm, (ii) a glass transition temperature of at least 105 C. , and (iii) an intrinsic loss of less than one dB/mm at 1310 and 1550 nm. In disclosed embodiments, the polymer includes at least one monomer including fluorinated moieties and, optionally, one or more additional monomers. A main body portion of the element has a first planar contact face on a first side and a second planar contact face on a second, opposite side. The contact faces are dimensioned to couple optically with first and second optical fibers when ends of the fibers are urged against the faces by parts of an attenuator device in which the element is mounted.

56888872, Nov 18, 1997

Dec 21, 1995

8/576594

Vahid Bagheri - Lisle IL
Bruce Edward Firth - Buffalo Grove IL
Joanna Kyrle Money - Chicago IL
Eric Jan Moore - Carol Stream IL
Frank Calabrese - Streamwood IL
Robert Scott Hensey - West Chicago IL

Amoco Corporation - Chicago IL

C08F 1000
C08F 444
C07C 900
C07C 224

5263487

Catalysts and processes are described to make low molecular weight, essentially terminally-unsaturated, viscous poly(1-olefin) or copoly(1-olefin) having a high terminal vinylidine content from a feed stock containing one or more 1-olefin and other volatile hydrocarbon liquids using a Ziegler catalyst made from a Group IVb metallocene and an aluminoxane cocatalyst, particularly bis(cyclopentadienyl) and bis(indenyl) titanium(IV), zirconium(IV) or hafnium(IV) compounds and methylaluminoxane. A particularly useful feed stock is a refinery stream containing 1-olefins and isobutylene which is used to make polyisobutylene. The reactive, essentially terminally-unsaturated, viscous poly(1-olefin) or copoly(1-olefin) can be functionalized to make a number of products useful as sealants, petroleum additives, adhesives, and the like by reacting the terminal vinylidine linkage with an aromatic, an epoxidation agent, a silylation agent, maleic anhydride, carbon monoxide and hydrogen, hydrogen, a halogen, a hydrohalogen, and the like.

60434015, Mar 28, 2000

Jan 15, 1998

9/007591

Vahid Bagheri - Lisle IL
Bruce Edward Firth - Buffalo Grove IL
Frank Calabrese - Streamwood IL
Robert Scott Hensey - West Chicago IL

BP Amoco Corporation - Chicago IL

C10L 116

585 12

Catalysts and processes are described to make low molecular weight, essentially terminally-unsaturated, viscous poly(1-olefin) or copoly(1-olefin) having a high terminal vinylidine content from a feed stock containing one or more 1-olefin and other volatile hydrocarbon liquids using a Ziegler catalyst made from a Group IVb metallocene and an aluminoxane cocatalyst, particularly bis(cyclopentadienyl) and bis(indenyl) titanium(IV), zirconium(IV) or hafnium(IV) compounds and methylaluminoxane. A particularly useful feed stock is a refinery stream containing 1-olefins and isobutylene which is used to make polyisobutylene. The reactive, essentially terminally-unsaturated, viscous poly(1-olefin) or copoly(1-olefin) can be functionalized to make a number of products useful as sealants, petroleum additives, adhesives, and the like by reacting the terminal vinylidine linkage with an aromatic, an epoxidation agent, a silylation agent, maleic anhydride, carbon monoxide and hydrogen, hydrogen, a halogen, a hydrohalogen, and the like.