"Is there a calculation, maybe other than "PatternCount" that will extract a quote mark from a text string?"
Can you provide a sample of the data and what the result should look like?
If you want all text UP TO the first quote, try:
Trim ( If ( PatternCount ( field name ; "\"" ) ≥ 1 ; Left ( field name ; Position ( field name ; "\""; 1 ; 1 ) -1 ) ; field name ) )
Be careful when selecting the quote. It automatically inserts a space and that will break your calc. If you forget how to enter for escaped quotes, just type FOUR " in a row, no spaces and FM will convert it properly to "\"".
I included a Trim() because there may be trailing space to remove. If this isn't what you want, please explain more. :^)