Growing community of inventors

Bedford, MA, United States of America

David B Spencer

Average Co-Inventor Count = 2.73

ph-index = 16

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 764

David B SpencerEdward J Sommer, Jr (14 patents)David B SpencerCharles E Roos (13 patents)David B SpencerRobert H Parrish (8 patents)David B SpencerR Lynn Conley (7 patents)David B SpencerMark Edgson (3 patents)David B SpencerRichard E Hill (3 patents)David B SpencerMerton C Flemings (2 patents)David B SpencerRobert Mehrabian (2 patents)David B SpencerLaurie Anne Spencer (2 patents)David B SpencerDiran Apelian (1 patent)David B SpencerRobert De Saro (1 patent)David B SpencerJeffrey J Webster (1 patent)David B SpencerAldo M Reti (1 patent)David B SpencerMichael Scott Mellen (1 patent)David B SpencerDavid B Spencer (23 patents)Edward J Sommer, JrEdward J Sommer, Jr (46 patents)Charles E RoosCharles E Roos (30 patents)Robert H ParrishRobert H Parrish (11 patents)R Lynn ConleyR Lynn Conley (8 patents)Mark EdgsonMark Edgson (7 patents)Richard E HillRichard E Hill (5 patents)Merton C FlemingsMerton C Flemings (25 patents)Robert MehrabianRobert Mehrabian (4 patents)Laurie Anne SpencerLaurie Anne Spencer (2 patents)Diran ApelianDiran Apelian (20 patents)Robert De SaroRobert De Saro (3 patents)Jeffrey J WebsterJeffrey J Webster (1 patent)Aldo M RetiAldo M Reti (1 patent)Michael Scott MellenMichael Scott Mellen (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Spectramet, LLC (13 from 13 patents)

2. Other (4 from 832,812 patents)

3. Massachusetts Institute of Technology (2 from 8,373 patents)

4. Melt Cognition, LLC (1 from 1 patent)

5. Sprectramet, LLC (1 from 1 patent)


23 patents:

1. D864423 - Insert strip for shingled roofs

2. D851288 - Insert for roof shingle or tile

3. D839019 - Organizer

4. 9956609 - Metal sorting, melting and fabrication apparatus and methods

5. 9499988 - Shingle inserts and method for eliminating and preventing growth of algae, moss, or lichens on a roof

6. 9103124 - Shingle inserts and method for eliminating and preventing growth of algae, moss, or lichens on a roof

7. 8861675 - Method and apparatus for sorting materials according to relative composition

8. 8855809 - Material sorting technology

9. 8553838 - High speed materials sorting using X-ray fluorescence

10. 8476545 - Sorting pieces of material based on photonic emissions resulting from multiple sources of stimuli

11. 8144831 - Method and apparatus for sorting materials according to relative composition

12. 7978814 - High speed materials sorting using X-ray fluorescence

13. 7848484 - Method and apparatus for sorting materials according to relative composition

14. 7788870 - Method and roofing strip for retarding moss, fungi, and algae growth on roofs

15. 7763820 - Sorting pieces of material based on photonic emissions resulting from multiple sources of stimuli

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idiyas.com
as of
12/19/2025
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