Hello. I'll be happy to assist you.
In a divorce in a community property
state, like California, there are two types of property: separate property (usually property acquired BEFORE the marriage) and community property (usualyl property acquired AFTER the marraige began). When getting a divorce, the spouses are obligated to divide up the community property, but not the seperate property. So, in this case, the business is your separate property since you acquired it BEFORE the marriage, and he is not entitled to any portion of it. That said, he MAY be entitled to a portion of the increased value of the business during the marriage. For exmaple, if the business was worth $1,000 before the marraige, but increased to $5,000 during the course of the marraige, he could claim a part of the $4,000 the business increased during the course of the marriage. There are several different formulias courts use to determine how much that would be (you can read more about them here: http://www.minyardmorris.com/resources/family-law/allocation-value).
So, while he's not entitled to any of the value of the business before marriage, he may be entitled to some portion of the increase in its value over the course of your marraige.
I hope that answers your question. If not, feel free to ask follow up questions. If so, please remember to "Rate" my answer before you go. Good luck.