How can we change a patriarchal society? I believe women are strong and unbeatable. So, we must gather our strength and revive our appetite for equality. It begins one step at a time with one item at a time, in this case, money. An employer whether man or woman will not pay more to an employee who does not request, require, demand, or petition for a higher salary. Remember the squeaky wheel gets the oil? Well, women need to start squeaking, loudly.
Prepare for an argument, for there will be one. Write down the time you have been employed, the positive aspects of having you as an employee, the salary you began with and the salary you have, and the success of the business and how you have contributed. Decide on the amount you will be asking before you enter his/her office. Let the amount be reasonable not too much or too little. Research to learn the best approach to asking for a raise, and then for the benefit of all women, do it and share your success.