Pump or valve seal

Details Pump or valve seal Pump or valve seal

2007-12-21

2011-11-22

Choi, Ling (Department: 1762)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C277S650000

Reexamination Certificate

active

08063130

ABSTRACT:
A pump or valve gasket for a fluid dispenser device, said gasket comprising at least one elastomer and at least one basic inorganic filler having pH that is greater than or equal to 8.

REFERENCES:
patent: 2938011 (1960-05-01), Wormuth
patent: 3783091 (1974-01-01), Leslie et al.
patent: 6780929 (2004-08-01), Leone
patent: 2005/0131156 (2005-06-01), Sawada et al.
patent: 2005/0241636 (2005-11-01), Ohbi et al.
patent: 2006/0273117 (2006-12-01), Barranco et al.
patent: 2 787 424 (2000-06-01), None
patent: 2 855 829 (2004-12-01), None
patent: 2 410 500 (2005-08-01), None
patent: 09137029 (1997-05-01), None
patent: 97/01611 (1997-01-01), None
Translation of JP 09137029, May 1997.

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