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For the Inventor, By the Inventor

Ashtabula, OH, United States of America

Mikkelsens, Inc.


USPTO Granted Patents = 160

Forward Citations = 92

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17 inventors (with patents filed for the assignee):

goldMedal Lyndon W Drewlow (80 out of 80 patents)

silverMedal James C Mikkelsen (62 out of 64 patents)

bronzeMedal Cornelis P Van Den Berg (12 out of 12 patents)

4.  Claude Hope (3 out of 39 patents)

5.  Adolf Grob (3 out of 3 patents)

6.  Edward P Mikkelsen (2 out of 2 patents)

7.  Moritz Burki (2 out of 2 patents)

8.  Leslie Woodriff (2 out of 2 patents)

9.  Hans Joachim Rohde (2 out of 2 patents)

10.  Konrad Michelssen (1 out of 1 patent)

11.  Arthur Barco (1 out of 1 patent)

12.  Heinz Sommer (1 out of 1 patent)

13.  Alexander Hrebeniuk (1 out of 2 patents)

14.  Alexander Hrebenink (1 out of 1 patent)

15.  Hans-Joachim Rohde (1 out of 1 patent)


Core Competencies:
Kalanchoe
Impatiens
Poinsettia
Floral Breeding
Plant Variety
Horticulture
Double-Flowering
New Guinea
Cultivar
Genetic Traits
Hybridization
Bloom Characteristics

160 patents:

1. 5684225 - Double-flowering New Guinea Impatiens (1997-11-04),
2. PP9839 - Kalanchoe plant named Empress (1997-03-25),
3. PP9675 - Kalanchoe plant named Merit (1996-10-29),
4. PP9674 - Kalanchoe plant named Chivalry (1996-10-29),
5. PP9452 - Poinsettia plant named `Red Delight` (1996-02-13),
6. PP9111 - Kalanchoe plant named Legacy (1995-04-18),
7. 5399798 - Double-flowering New Guinea Impatiens (1995-03-21),
8. PP8938 - Impatiens plant named Tempest (1994-10-11),
9. PP8917 - Impatiens plant named Allegro (1994-09-27),
10. PP8916 - Impatiens plant named Baroque (1994-09-27),
11. PP8907 - Impatiens plant named Canon (1994-09-20),
12. PP8906 - Impatiens plant named Sonata (1994-09-20),
13. PP8905 - Impatiens plant named Largo (1994-09-20),
14. PP8904 - Impatiens plant named Shadow (1994-09-20),
15. PP8903 - Impatiens plant named Ambience (1994-09-20),
Company Overview
Mikkelsens, Inc., based in Ashtabula, Ohio, specializes in floral breeding, focusing on the development of innovative plant varieties. The company is known for its expertise in cultivating Kalanchoe, Impatiens, and Poinsettia, among other floral species. Mikkelsens emphasizes horticultural advancements, particularly in double-flowering varieties and New Guinea plants, contributing to the enhancement of ornamental horticulture. Their commitment to research and development positions them as a key player in the floral industry.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

160 Patents

#1 in Ashtabula, OH

#113 in Ohio

#2,479 in US

#5,152 in the World

Ashtabula, OH (US)
Ashtabula, OH, United States of America

Mikkelsens, Inc.

Forward Citations = 92

17 inventors:

goldMedal Lyndon W Drewlow (80 out of 80 patents)

silverMedal James C Mikkelsen (62 out of 64 patents)

bronzeMedal Cornelis P Van Den Berg (12 out of 12 patents)

4.  Claude Hope (3 out of 39 patents)

5.  Adolf Grob (3 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Mikkelsens, Inc.. Retrieved from https://idiyas.com/company/mikkelsens

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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