To confirm that window to request is 90 days see below.
Thanks again Dan.
Dear Tzfas
Thank you for contacting Chase inquiring about the rewards
offer for new Chase Ink Bold customers.
I see that your account is enrolled to receive 50,000
points, once you make purchases worth $5000 in the first
93 days. As the recent 60,000 points offer was promoted
online and you contacted us within 90 days from your
account open date, I have added 10,000 points to your
account to match the current offer to the offer enrolled
on your account. This adjustment will be shortly
reflected online. Further, the 50,000 bonus as per the
original offer, will be credited to your account once the
next statement gets issued on x/x/2012.
Chase is pleased to be your Card of Choice. Thank you for
e-mailing today.
If you have any further questions, please reply using the
Secure Message Center.
Thank you,
Hemant Shukla
E-mail Customer Service Advisor
1-800-346-5538
Account is owned by Chase Bank USA, N.A. and may be
serviced by its affiliates.