The phrase "joint efforts between" is correct and usable in written English.
You might use this phrase to express the idea that two or more people or entities are working together toward a common goal. For example, "Our success was made possible through joint efforts between the two companies."
Now eWeek reports that "Sources close to the joint efforts between Google Inc and Sun Microsystems Inc say rampant speculation about hosted desktop productivity offerings and common operating systems is way off base".
Together, they described recent joint efforts between the United States and Saudi Arabia that have closed down charities suspected of funneling money to terrorists and spurred Saudi banks to freeze the assets of organizations suspected of financing terrorist operations.
Research output reflects the collaborative and interdisciplinary nature of joint efforts between SEAS, the Center for Green Chemistry and Green Engineering, the Center for Industrial Ecology, the Yale School of Forestry and Environmental Studies, and others.
Greater joint efforts between Westminster and Holyrood will also be required to support initiatives reducing demand for energy, the report states, as well as initiatives to provide more timely grid connections for projects in outlying areas and boost investment in wave and tidal energy technologies and pumped storage.
And the promise to me and the impressive thing to me about this program is the possibilities, the potentialities, that it holds for encouraging similar activities, joint efforts, between the schools and colleges within the State of Connecticut and across the nation.
Joint efforts between men and women in doing business at the family level is of great important in improving wellbeing, hence elimination of negative attitude towards women entrepreneurs doing business.
"It's a joint effort between me and my parents.
"In this area," he said, "there is a joint effort between both government and society".
The Broad Institute is a rare joint effort between two fiercely competitive institutions, Harvard and the Massachusetts Institute of Technology.
The bridge was a joint effort between Brunalli Construction of Southington and DeMatteo Construction of Springfield, Mass.
"It is very much a joint effort between Joe and Daniel," the spokesman said.
