1
Namassivaya Doddi, Charles C Versfelt, David Wasserman: Synthetic absorbable surgical devices of poly-dioxanone. Ethicon, Wayne R Eberhardt, October 11, 1977: US04052988 (254 worldwide citation)

Synthetic absorbable sutures and other surgical devices are prepared from polymers of p-dioxanone and 1,4-dioxepan-2-one, and alkyl substituted derivatives thereof. Monofilament sutures of oriented fibers are characterized by good tensile and knot strength and a high level of flexibility and softnes ...


2
Yuzi Okuzumi, A Darline Mellon, David Wasserman: Addition copolymers of lactide and glycolide and method of preparation. Ethicon, Wayne R Eberhardt, February 6, 1979: US04137921 (169 worldwide citation)

Relatively high molecular weight, fiber-forming, crystalline copolymers of lactide and glycolide are prepared in a two-stage polymerization process. In the first stage there is prepared a random copolymer of a major proportion of an optically active lactide with a minor proportion of glycolide or d, ...


3
Warren Davis, David Wasserman: Dental syringe tip and adaptor. Quirk Tratos & Roethel, September 17, 1991: US05049071 (114 worldwide citation)

A clear rigid plastic syringe tip having a central water passageway and three arcuate section air passageways disposed circumferentially about the water passageway. The syringe tip has an extension that mounts the syringe tip into an adaptor which holds the assembly in the handpiece body. Alternativ ...


4
David Wasserman, Shalaby W Shalaby, Otis J Bouwsma: Dental inserts for treatment of periodontal disease. Ethicon, Paul A Coletti, December 15, 1992: US05171148 (84 worldwide citation)

An absorbable mesh material useful as a dental implant. The mesh is cut by lasers to afford smooth edges which will not unravel. The implant may be attached by a ligature or suture material, generally formed from the same material as the implant, and attached to the implant by, among other things, l ...


5
Yuzi Okuzumi, A Darline Mellon, David Wasserman: Addition copolymers of lactide and glycolide and method of preparation. Ethicon, Wayne R Eberhardt, June 5, 1979: US04157437 (60 worldwide citation)

Relatively high molecular weight, fiber-forming, crystalline copolymers of lactide and glycolide are prepared in a two-stage polymerization process. In the first stage there is prepared a random copolymer of a major proportion of an optically active lactide with a minor proportion of glycolide or d, ...


6
Kevin Cooper, David Wasserman, Angelo G Scopelianos, Dennis D Jamiolkowski: Aromatic polyanhydrides. Ethicon, Matthew S Goodwin, November 23, 1993: US05264540 (58 worldwide citation)

An improved process for preparing an aromatic polyanhydride is disclosed. The aromatic polyanhydride is prepared by reacting an aromatic dicarboxylic acid with an anhydride to form an anhydride prepolymer, isolating and purifying the prepolymer, and subjecting the prepolymer to melt polycondensation ...


7
David Wasserman: Unicycle. Robert D Farkas, December 13, 1977: US04062558 (55 worldwide citation)

This disclosure pertains to a one wheeled vehicle rotatably affixed to a yoke. One arm of the yoke is provided with a stationary foot rest. The other arm of the yoke contains a rack which when reciprocated operates a gear train causing the wheel to rotate. A platform is secured to the uppermost port ...


8
Raymond W Smith, David Wasserman: Pirate game apparatus. Eric A LaMorte, October 24, 1995: US05460381 (31 worldwide citation)

A game apparatus wherein players move along a playing path and make various electrical interconnections along the way. At any one given time only one space on the playing field contains an open switch coupled to a noise generating device. If a player lands on the selected space and closes the switch ...


9
Warren Davis, David Wasserman, Richard R Mathews: Dental syringe tip and adaptor. John Edward Roethel, March 9, 1993: US05192206 (28 worldwide citation)

Various adaptors are used for securing a replaceable syringe tip in operative relationship to a handpiece body. The syringe tip is mounted on a tapered male connector set in the hollow interior of the adaptor. O ring seals and a metal flange member are used to prevent the leakage of air or water pas ...


10
Warren Davis, David Wasserman, Richard R Matthews: Syringe tip locking assembly. John Edward Roethel, February 6, 1996: US05489205 (27 worldwide citation)

A syringe tip is locked into a three-way dental handpiece body means of a syringe tip locking assembly that screws into a threaded receiver in the body of the handpiece. The locking assembly comprises an adaptor that has a central tapered male member that receives one end of the syringe tip, a gripp ...