| 501 (1942) | Marshfield Clinic | USA |  |
| 502 (1955) | Claremont Graduate University | USA |  |
| 503 (1958) | University of Massachusetts, Dartmouth | USA | |
| 504 (1962) | East Carolina University | USA | |
| 505 (1967) | Swarthmore College | USA | |
| 506 (1968) | Boise State University | USA | |
| 507 (1984) | Virginia-Maryland Regional College of Veterinary Medicine | USA | |
| 508 (1992) | National Radio Astronomy Observatory, Charlottesville | USA |  |
| 509 (2011) | University of South Alabama | USA | |
| 510 (2012) | Freescale Semiconductor, Inc. | USA |  |
| 511 (2020) | New Mexico Institute of Mining and Technology | USA | |
| 512 (2031) | VA NY Harbor Healthcare System | USA | |
| 513 (2040) | Middlebury College | USA | |
| 514 (2047) | Amherst College | USA | |
| 515 (2067) | Florida Institute of Technology | USA | |
| 515 (2067) | Northern Illinois University | USA | |
| 517 (2097) | South Dakota State University | USA | |
| 518 (2099) | Wesleyan University, Middletown | USA | |
| 519 (2106) | University of Louisiana, Lafayette | USA | |
| 520 (2108) | University of Denver | USA | |
| 521 (2113) | Milwaukee VA Medical Center | USA | |
| 522 (2114) | Hartford Hospital | USA | |
| 523 (2122) | Texas Christian University | USA | |
| 524 (2132) | California State University, Los Angeles | USA | |
| 525 (2136) | University of Richmond | USA | |
| 526 (2141) | City University of New York, Queens College | USA | |
| 527 (2156) | American University | USA | |
| 528 (2162) | Trinity University | USA | |
| 529 (2184) | Florida Agricultural & Mechanical University | USA | |
| 530 (2189) | College of Charleston | USA | |
| 531 (2194) | Corning Incorporated | USA | |
| 531 (2194) | Duquesne University | USA | |
| 533 (2203) | San Jose State University | USA | |
| 534 (2205) | Southwest Research Institute | USA |  |
| 535 (2208) | Texas Tech University Health Sciences Center | USA | |
| 536 (2221) | University of Texas, El Paso | USA | |
| 537 (2225) | University of Texas, Pan American | USA | |
| 538 (2228) | West Chester University of Pennsylvania | USA | |
| 539 (2229) | Jackson State University | USA | |
| 540 (2235) | Indiana University-South Bend | USA | |
| 541 (2254) | Fordham University | USA | |
| 541 (2254) | Northrop Grumman Corporation | USA | |
| 543 (2285) | City University of New York, John Jay College of Criminal Justice | USA | |
| 544 (2292) | The College of New Jersey | USA | |
| 545 (2298) | Nemours A Children's Health System | USA | |
| 546 (2313) | Texas Biomedical Research Institute | USA | |
| 547 (2319) | California State University, Long Beach | USA | |
| 548 (2329) | University of Northern Iowa | USA | |
| 549 (2365) | Texas Woman's University | USA | |
| 550 (2372) | Illinois State University | USA | |
| 551 (2382) | Maimonides Medical Center | USA | |
| 552 (2395) | Loyola Marymount University | USA | |
| 553 (2396) | Western Michigan University | USA | |
| 554 (2413) | University of North Dakota | USA | |
| 555 (2417) | University of Hawaii, Hilo | USA | |
| 556 (2422) | Morehouse School of Medicine | USA | |
| 557 (2431) | NASA Johnson Space Center | USA | |
| 558 (2434) | Geisinger Medical System | USA | |
| 559 (2446) | Eastman Kodak Company | USA | |
| 560 (2465) | Ford Motor Company | USA | |
| 561 (2471) | Glenn Research Center | USA | |
| 562 (2478) | University of South Dakota | USA | |
| 563 (2495) | California State University, San Bernardino | USA | |
| 564 (2498) | Louisiana Tech University | USA | |
| 565 (2506) | Boeing Company, USA | USA | |
| 566 (2512) | California State University, Fullerton | USA | |
| 566 (2512) | University of San Diego | USA | |
| 568 (2515) | Sanofi-Aventis, United States | USA | |
| 569 (2520) | California State University, Northridge | USA | |
| 570 (2528) | Lockheed Martin Corporation | USA | |
| 571 (2537) | Electric Power Research Institute | USA | |
| 572 (2554) | Nova Southeastern University, Estados Unidos | USA | |
| 572 (2554) | Wichita State University | USA | |
| 574 (2560) | The Catholic University of America | USA | |
| 575 (2566) | East Tennessee State University | USA | |
| 576 (2573) | Eastern Michigan University | USA | |
| 577 (2579) | Raytheon Company | USA | |
| 578 (2589) | Children's Mercy Hospital | USA | |
| 579 (2596) | University of Nebraska, Omaha | USA | |
| 580 (2605) | Franklin & Marshall College | USA | |
| 581 (2608) | Colgate University | USA | |
| 582 (2616) | Battelle Memorial Institute | USA | |
| 582 (2616) | Indiana State University | USA | |
| 584 (2628) | Central Michigan University | USA | |
| 585 (2636) | Louisiana State University Agricultural Center | USA | |
| 586 (2649) | University of Northern Colorado | USA | |
| 587 (2652) | University of Tennessee, Chattanooga | USA | |
| 588 (2659) | Towson University | USA | |
| 589 (2669) | Saint Cloud State University | USA | |
| 590 (2675) | Northeastern Ohio Universities College of Medicine | USA | |
| 591 (2686) | Mount Holyoke College | USA | |
| 592 (2688) | Arkansas State University | USA | |
| 593 (2692) | James Madison University | USA | |
| 594 (2697) | University of Wisconsin, Eau Claire | USA | |
| 595 (2700) | City University of New York, Lehman College | USA | |
| 596 (2729) | Wilford Hall Ambulatory Surgical Center | USA | |
| 597 (2738) | NASA Stennis Space Center | USA | |
| 598 (2740) | Hofstra University | USA | |
| 599 (2743) | University of Arkansas, Little Rock | USA | |
| 600 (2754) | Montclair State University | USA | |
| 600 (2754) | Smith College | USA | |
| 600 (2754) | University of Tulsa | USA | |
| 603 (2760) | Washington State University, Vancouver | USA | |
| 604 (2771) | Kennesaw State University | USA | |
| 605 (2778) | Alegent Creighton Health | USA | |
| 606 (2787) | Tennessee Technological University | USA | |
| 607 (2789) | Appalachian State University | USA | |
| 608 (2811) | University of Alaska, Anchorage | USA | |
| 609 (2820) | Missouri State University | USA | |
| 610 (2836) | Idaho National Laboratory | USA | |
| 611 (2838) | Walter Reed National Military Medical Center | USA | |
| 612 (2859) | Rowan University | USA | |
| 613 (2861) | ExxonMobil | USA | |
| 614 (2875) | University of Wisconsin, Oshkosh | USA | |
| 615 (2877) | Howard University | USA | |
| 616 (2878) | Grand Valley State University | USA | |
| 617 (2896) | Ball State University | USA | |
| 618 (2899) | California State University, Sacramento | USA | |
| 619 (2912) | Science Applications International Corporation | USA | |
| 620 (2913) | California State University, Fresno | USA | |
| 620 (2913) | Southern Illinois University Edwardsville | USA | |
| 622 (2927) | Tuskegee University | USA | |
| 623 (2940) | Winthrop-University Hospital | USA | |
| 624 (2951) | Agilent Technologies | USA | |
| 625 (2953) | Lamar University | USA | |
| 626 (2965) | Idaho State University | USA | |
| 627 (2968) | Cisco Systems | USA | |
| 628 (2973) | Western Kentucky University | USA | |
| 629 (2985) | Texas State University, San Marcos | USA | |
| 630 (2998) | Midwestern University | USA | |
| 631 (3009) | California State University, East Bay | USA | |
| 632 (3046) | Aerospace Corporation | USA | |
| 633 (3087) | Adelphi University | USA | |
| 634 (3093) | National Radio Astronomy Observatory, Socorro | USA | |
| 635 (3097) | Meharry Medical College | USA | |
| 636 (3109) | Sam Houston State University | USA | |
| 637 (3134) | Georgia Southern University | USA | |
| 637 (3134) | Lehigh Valley Hospital | USA | |
| 639 (3137) | Seton Hall University | USA | |
| 640 (3146) | Naval Air Systems Command | USA | |
| 641 (3152) | California State Polytechnic University, Pomona | USA | |
| 641 (3152) | Chevron Corporation | USA | |
| 643 (3169) | California State University, Chico | USA | |
| 644 (3172) | American Society of Mechanical Engineers | USA | |
| 645 (3177) | Seattle University | USA | |
| 646 (3198) | Marshall University | USA | |
| 647 (3202) | South Dakota School of Mines and Technology | USA | |
| 648 (3211) | Long Island University | USA | |
| 649 (3222) | Saint John's University | USA | |
| 650 (3247) | University of North Florida | USA | |
| 651 (3272) | California Polytechnic State University, San Luis Obispo | USA | |
| 652 (3305) | Humboldt State University | USA | |
| 653 (3310) | Prairie View A&M University | USA | |
| 654 (3322) | NASA Kennedy Space Center | USA | |
| 655 (3332) | Tennessee State University | USA | |
| 656 (3339) | Western Illinois University, Macomb | USA | |
| 657 (3344) | Middle Tennessee State University | USA | |
| 658 (3347) | United States Fish and Wildlife Service | USA | |
| 659 (3363) | Dow Chemical Company | USA | |
| 660 (3381) | Hampton University | USA | |
| 661 (3385) | University of the Pacific | USA | |
| 662 (3400) | University of West Florida | USA | |
| 663 (3474) | NASA Marshall Space Flight Center | USA | |
| 664 (3478) | Western Carolina University | USA | |
| 665 (3485) | Lafayette College | USA | |
| 666 (3500) | MITRE Corporation, McLean | USA | |
| 667 (3517) | Southeastern Louisiana University | USA | |
| 668 (3563) | Pace University | USA | |
| 669 (3618) | Indiana University of Pennsylvania | USA | |
| 670 (3623) | Applied Materials, Inc. | USA | |
| 671 (3657) | Indiana University/Purdue University at Fort Wayne | USA | |
| 672 (3701) | American Chemical Society | USA | |
| 673 (3807) | Youngstown State University | USA | |
| 674 (3809) | Purdue University Calumet | USA | |
| 675 (3812) | Missouri Botanical Garden | USA | |
| 676 (3899) | United States Military Academy at West Point | USA | |
| 677 (3908) | Embry-Riddle Aeronautical University | USA | |
| 678 (3971) | Savannah River National Laboratory | USA | |
| 679 (3993) | ConocoPhillips Company | USA | |
| 680 (4083) | URS Corporation | USA | |
| 681 (4178) | Society of Petroleum Engineers | USA | |
| 682 (4218) | Baker Hughes | USA | |
| 683 (4232) | Research Institute for Fragrance Materials | USA | |
| 684 (4235) | Halliburton Texas, Houston | USA | |
| 685 (4239) | Nuclear Regulatory Commission | USA | |
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