John M Papinsick

43581110, Nov 9, 1982

Apr 2, 1981

6/250505

John Papinsick - Summit Hill PA
John J. Oransky - Lansford PA
Shivaji Sircar - Allentown PA

Air Products and Chemicals, Inc. - Allentown PA

A63B 4100

273 61R

A pressurized, non-refillable recreation ball inflated with a mixture of sulfur hexafluoride and air for improved shelf life and pressure retention is obtained by filling the ball with sulfur hexafluoride in a range of 65% to 75% by volume and 35% to 25% by volume of air. Preferably, the sulfur hexafluoride is present in an amount of 71% by volume. The recreation balls include tennis balls, racquet balls, squash balls, handballs and other non-refillable pressurized balls.

41939760, Mar 18, 1980

Apr 6, 1978

5/894114

John T. Lileck - Tamaqua PA
John Papinsick - Summit Hill PA
Edward J. Steigerwalt - Lehighton PA

Air Products & Chemicals, Inc. - Allentown PA

C01B 2152

423406

This invention relates to a process for purifying a nitrogen trifluoride containing atmosphere contaminated with dinitrogen difluoride. The atmosphere is purified by heating the nitrogen trifluoride atmosphere in the presence of a particulate metal capable of defluorinating dinitrogen difluoride, but inert to nitrogen trifluoride, preferably the metal being selected from the group consisting of iron, cobalt, and nickel, to a temperature of from about 300. degree. -1000. degree. F. for a time sufficient to effect defluorination of the dinitrogen difluoride.