Optics: measuring and testing – Sample – specimen – or standard holder or support – Fluid containers
Reexamination Certificate
2011-08-23
2011-08-23
Chowdhury, Tarifur (Department: 2886)
Optics: measuring and testing
Sample, specimen, or standard holder or support
Fluid containers
C356S440000, C250S373000
Reexamination Certificate
active
08004672
ABSTRACT:
A closed cell for use in spectrophotometers is adapted to receive a liquid to be subjected to analysis and an air space or bubble to absorb pressure differentials, wherein the cell includes means to retain the air space or bubble in a predetermined location in the cell.
REFERENCES:
patent: 3508837 (1970-04-01), Hrdina
patent: 3795451 (1974-03-01), Mailen
patent: 3867042 (1975-02-01), Mayer et al.
patent: 4565446 (1986-01-01), Chu
patent: 5475486 (1995-12-01), Paoli
patent: 5831727 (1998-11-01), Stream
patent: 2005/0168737 (2005-08-01), Bradshaw et al.
patent: 2006/0073609 (2006-04-01), Shimizu
Hammond John
Hume Keith
Chowdhury Tarifur
LaPage Michael
Nagle, Jr. David W.
Starna Scientific Limited
Stites & Harbison PLLC
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