RELATED PARTY TRANSACTIONS RELATED PARTY TRANSACTIONS	9 Months Ended
Sep. 30, 2019
Related Party Transactions [Abstract]
RELATED PARTY TRANSACTIONS	RELATED PARTY TRANSACTIONS In August 2019, we entered into a consulting agreement with a member of our board of directors. Under the agreement, the board member would provide technical advisory services for cash payments totaling $50,000 paid in twelve equal monthly installments as well as an award of restricted stock units equal in value to $100,000 as of the grant date. The restricted stock units vest in full on January 1, 2020. No later than January 15, 2020, the board member shall receive an additional grant of restricted stock units equal to $100,000 of value as of the grant date, provided that, as of the grant date of the second grant, the board member is still providing the technical advisory services to the company. The second grant will vest in full on December 31, 2020. In the event the board member is still performing services to the company after 2020, the Company will issue new grants equal to no less than $100,000 worth of restricted stock units in January of each additional year with such grants vesting at the end of each year so long as the services are still being provided. The agreement is cancelable at any time by either the Company or the board member. During the three and nine months ended September 30, 2019, we recorded expenses of $8,000 in connection with cash compensation portion of the consulting agreement, which are included in general and administrative expenses. Additionally, during the three and nine months ended September 30, 2019, we recorded $42,000 related to the restricted stock unit award, which is included in research and development expenses. As of September 30, 2019, there were no amounts due to the board member under this consulting agreement. In July 2019 we entered into a securities purchase agreement with Murata Electronics North America, Inc., an affiliate of Murata Manufacturing Co., Ltd., (“Murata”) for the sale by the Company of 2,766,798 shares of common stock of the Company, par value $0.001 per share at a price of $2.53 per Share, for gross proceeds of approximately $7.0 million. Upon closing in September 2019, Murata owned approximately 8.5% of our outstanding common stock. Concurrent with the closing, we entered into a collaboration and license agreement with Murata Manufacturing Co., Ltd. Pursuant to the collaboration agreement, we have agreed with Murata to collaborate on the development of proprietary circuit designs using our XBAR® technology, and we licensed to Murata rights for products in four specific radio frequencies, or bands. Murata has agreed to pay us up to an aggregate of $9.0 million as pre-paid royalties and other fees for the licensed designs and certain other intellectual property developed in the collaboration, payable in installments over a multi-year development period, with each installment conditional upon our achievement of certain milestones and deliverables acceptable to Murata in its discretion. Murata may terminate the collaboration agreement at any time upon thirty (30) days prior written notice to us. Murata’s rights to our XBAR® technology are exclusive for a period of 30 months, ending in March 2022, during which period we may not grant to any third party the right to develop, make, have made, use, sell, offer for sale or import any filter or resonator produced through the use of the XBAR® technology for use in mobile communication devices. Under the collaboration agreement, the first of payment of $2.0 million was due to us, and was recorded in accounts receivable with the offset to deferred revenue at September 30, 2019. Payment was received on October 11, 2019.

RELATED PARTY TRANSACTIONS

In August 2019, we entered into a consulting agreement with a member of our board of directors. Under the agreement, the board member would provide technical advisory services for cash payments totaling $50,000 paid in twelve equal monthly installments as well as an award of restricted stock units equal in value to $100,000 as of the grant date. The restricted stock units vest in full on January 1, 2020. No later than January 15, 2020, the board member shall receive an additional grant of restricted stock units equal to $100,000 of value as of the grant date, provided that, as of the grant date of the second grant, the board member is still providing the technical advisory services to the company. The second grant will vest in full on December 31, 2020. In the event the board member is still performing services to the company after 2020, the Company will issue new grants equal to no less than $100,000 worth of restricted stock units in January of each additional year with such grants vesting at the end of each year so long as the services are still being provided. The agreement is cancelable at any time by either the Company or the board member. During the three and nine months ended September 30, 2019, we recorded expenses of $8,000 in connection with cash compensation portion of the consulting agreement, which are included in general and administrative expenses. Additionally, during the three and nine months ended September 30, 2019, we recorded $42,000 related to the restricted stock unit award, which is included in research and development expenses. As of September 30, 2019, there were no amounts due to the board member under this consulting agreement.

In July 2019 we entered into a securities purchase agreement with Murata Electronics North America, Inc., an affiliate of Murata Manufacturing Co., Ltd., (“Murata”) for the sale by the Company of 2,766,798 shares of common stock of the Company, par value $0.001 per share at a price of $2.53 per Share, for gross proceeds of approximately $7.0 million. Upon closing in September 2019, Murata owned approximately 8.5% of our outstanding common stock. Concurrent with the closing, we entered into a collaboration and license agreement with Murata Manufacturing Co., Ltd. Pursuant to the collaboration agreement, we have agreed with Murata to collaborate on the development of proprietary circuit designs using our XBAR® technology, and we licensed to Murata rights for products in four specific radio frequencies, or bands. Murata has agreed to pay us up to an aggregate of $9.0 million as pre-paid royalties and other fees for the licensed designs and certain other intellectual property developed in the collaboration, payable in installments over a multi-year development period, with each installment conditional upon our achievement of certain milestones and deliverables acceptable to Murata in its discretion. Murata may terminate the collaboration agreement at any time upon thirty (30) days prior written notice to us.

Murata’s rights to our XBAR® technology are exclusive for a period of 30 months, ending in March 2022, during which period we may not grant to any third party the right to develop, make, have made, use, sell, offer for sale or import any filter or resonator produced through the use of the XBAR® technology for use in mobile communication devices. Under the collaboration agreement, the first of payment of $2.0 million was due to us, and was recorded in accounts receivable with the offset to deferred revenue at September 30, 2019. Payment was received on October 11, 2019.