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For the Inventor, By the Inventor

Crystal Bay, MN, United States of America

Kroll Family Trust

Calculating rank
USPTO Granted Patents = 26

% Expired Patents = 65.4

Forward Citations = 469

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9 inventors (with patents filed for the assignee):

goldMedal Mark W Kroll (21 out of 342 patents)

silverMedal Lori C Kroll (6 out of 8 patents)

bronzeMedal Mark William Kroll (5 out of 39 patents)

4.  Chase R Kroll (4 out of 5 patents)

5.  Karl J F Kroll (3 out of 9 patents)

6.  Mollie B Kroll (1 out of 2 patents)

7.  Ryan Kroll (1 out of 1 patent)

8.  Karl J Kroll (1 out of 18 patents)

9.  Kai K Kroll (1 out of 66 patents)


Core Competencies:
Cell Phone Locator
Self Defense Cell Phone
Ambulatory Hairdryer
Domestic Animal Telephone
Electronic Control Device
Tan Thru Glasses
Disposable Defibrillator
Altitude Adjustment
Signature Security System
Toddler Stair Safety
Wind Resistant Picnic
EMI Detection

26 patents:

1. 8005474 - Cell phone locator method (2011-08-23),
2. 7986965 - Self defense cell phone with shocking circuitry (2011-07-26),
3. 7946056 - Ambulatory hairdryer (2011-05-24),
4. 7878152 - Domestic animal telephone (2011-02-01),
5. 7859818 - Electronic control device with wireless projectiles (2010-12-28),
6. 7805158 - Self defense cell phone with acceleration sensor and emergency call button (2010-09-28),
7. 7654230 - Domestic animal telephone (2010-02-02),
8. 7585071 - Tan thru glasses (2009-09-08),
9. 7540605 - Tan-through sunglasses (2009-06-02),
10. 7483715 - Self defense cell phone with projectiles (2009-01-27),
11. 7457636 - Self defense cellular telephone (2008-11-25),
12. 7444154 - Nuisance cell phone locator (2008-10-28),
13. 7438283 - Toddler stair safety system (2008-10-21),
14. 7413302 - Tan thru glasses (2008-08-19),
15. 7270411 - Light selective sports garments (2007-09-18),
Company Overview
Kroll Family Trust, based in Crystal Bay, MN, is a private investment entity that focuses on a diverse range of sectors, including technology, healthcare, and real estate. The trust is dedicated to fostering innovation and supporting ventures that align with its strategic vision. By leveraging its resources and expertise, Kroll Family Trust aims to create sustainable value and contribute positively to the communities in which it operates, emphasizing responsible investment practices and long-term growth.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Nov 3 2026

Kroll Family Trust USPTO Patent Assignee Logo
26 Patents

#1 in Crystal Bay, MN

#379 in Minnesota

#12,879 in US

#24,855 in the World

Crystal Bay, MN (US)
Crystal Bay, MN, United States of America

Kroll Family Trust

Forward Citations = 469

9 inventors:

goldMedal Mark W Kroll (21 out of 342 patents)

silverMedal Lori C Kroll (6 out of 8 patents)

bronzeMedal Mark William Kroll (5 out of 39 patents)

4.  Chase R Kroll (4 out of 5 patents)

5.  Karl J F Kroll (3 out of 9 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Kroll Family Trust. Retrieved from https://idiyas.com/company/kroll-family-trust

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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