Growing community of inventors

Westport, CT, United States of America

Karl H Schumacher

Average Co-Inventor Count = 2.08

ph-index = 14

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 = 947

Karl H SchumacherRonald P Sansone (7 patents)Karl H SchumacherDouglas B Quine (5 patents)Karl H SchumacherEdward P Daniels (23 patents)Karl H SchumacherRaymond Keating (5 patents)Karl H SchumacherRichard A Connell (2 patents)Karl H SchumacherClare E Woodman (1 patent)Karl H SchumacherEdward Paul Daniels, Jr (1 patent)Karl H SchumacherJoseph W Wall (1 patent)Karl H SchumacherUday W Joshi (1 patent)Karl H SchumacherJohn G Rahrig (1 patent)Karl H SchumacherPaul H Mitchell (1 patent)Karl H SchumacherJohn Kwant (1 patent)Karl H SchumacherJohn F Kwant (0 patent)Karl H SchumacherJohn F Kwant (0 patent)Karl H SchumacherKarl H Schumacher (16 patents)Ronald P SansoneRonald P Sansone (142 patents)Douglas B QuineDouglas B Quine (50 patents)Edward P DanielsEdward P Daniels (23 patents)Raymond KeatingRaymond Keating (6 patents)Richard A ConnellRichard A Connell (9 patents)Clare E WoodmanClare E Woodman (15 patents)Edward Paul Daniels, JrEdward Paul Daniels, Jr (9 patents)Joseph W WallJoseph W Wall (4 patents)Uday W JoshiUday W Joshi (2 patents)John G RahrigJohn G Rahrig (2 patents)Paul H MitchellPaul H Mitchell (2 patents)John KwantJohn Kwant (1 patent)John F KwantJohn F Kwant (0 patent)John F KwantJohn F Kwant (0 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Pitney Bowes Inc. (14 from 2,979 patents)

2. Other (1 from 832,912 patents)

3. Turnpike Data Processing LLC (1 from 1 patent)


16 patents:

1. RE43118 - Method for determining e-mail address format rules

2. 7543026 - System and method for address correction of electronic messages

3. 7149780 - Method for determining e-mail address format rules

4. 6895427 - System and method for cleansing addresses for electronic messages

5. 6839738 - System and method for cleansing addresses for electronic messages

6. 6343327 - System and method for electronic and physical mass mailing

7. 5229932 - Method and apparatus for categorizing and certifying mail batches

8. 5161109 - Up/down loading of databases

9. 5072401 - Optimizing mail delivery systems by logistics planning

10. 5068797 - Optimizing mail delivery systems by routing

11. 5060165 - Optimizing mail processing by matching publisher and printer entities

12. 5058008 - Mail system with personalized training for users

13. 5058030 - Optimizing mail processing by matching publisher and inserter entities

14. 5051914 - Optimizing mail delivery systems by merging mailings

15. 5008827 - Central postage data communication network

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as of
1/8/2026
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