I am a grandparent in ca going to oklahoma to pick up 3 grandkids if my son signs a notrized statement givng me permission to take the kids out of sta

Unless, her righst have been terminated, you need her permission also, in writing. I am well aware that is not what you wanted to hear. You have no legal right to deprive her of her children until a court allows you to do so. Espeially if the purpose is to secrete the children from her. You could find yourself in jail if she pursues this kidnapping. If she doesn't care a wit, then getting her written permission should not be a problem.
Why doesn't the father simply keep them in the home? They are still married as you said "wife", rather than ex wife.
A third party cannot just take off with children, no matter how well intentioned.

Since the natural father is in the home, he should be able to get her written permission. If the children are in danger from the mother, the father needs to get a protective order and prevent her access, follow the law. While he is getting an ex parte protection order for the children, he should ask the court for permission to remove the children from the state and place them temporarily with you. Cross the T's and dot I's or he might lose custody and you might find yourself will legal entanglements.
This type of activity must be done within the law and with evidence, being addicted is not necessarily a reason to without children from their mother, that is for a court to decide, not to take the law into your own hands, the mother is entitled to due process.

If there is or has been drug use around the chidlren, and you have proof, you should have her arrested , by filing a police report for child endangerment.

This answer was edited by SRDEsq 29 days ago.

Reason: typos

If the father and mother are still living together and the father is asking you to take the children while he is trying to help his wife, then all he needs to do is get a general form and fill it out stating your name,your relationship to the minor children,the fathers name giving consent ,and the name of all the children, the date they will be leaving,and the date they will be returning ,the state their leaving from and the state and the grandma's address,and consent to allow the grandmother to take the children for any medical treatments for the children as needed. You can get a general form at any UPS,or staples and online by going to freelegalforms.com. This is not uncommon when a parent(s) wants to allow the grandparents a visit. You would only need consent from the mother if the parent's were legally seperated,or divorced,ad there is a custody ordr in effect and the mother has custody,then the father would need to have the mother sign as well. I hope that the father can help the mother,and it is nice that you are there for him.

This answer was edited by tomturkey 63 days ago.

Reason: spelling correction

You can find the answers you need and more in a related post at [ http://www.webanswers.com/custody/does-oklahoma-have-grandparent-right s-755be0 ].

Regardless, what some people may "think"; a third party cannot remove children from their parents ( and the jurisdiction of the parents domicile) without written consent of BOTH parents.