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For the Inventor, By the Inventor

Hokkaido, Japan

Isf LLC

USPTO Granted Patents = 19



Trademarks = 5

Forward Citations = 330

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28 inventors (with patents filed for the assignee):

goldMedal Giorgio Pifferi (12 out of 28 patents)

silverMedal Mario Pinza (9 out of 36 patents)

bronzeMedal Carlo Farina (5 out of 35 patents)

4.  Luciano Dorigotti (3 out of 5 patents)

5.  Francesco Parravicini (2 out of 4 patents)

6.  Silvano Banfi (2 out of 5 patents)

7.  Akira Yano (1 out of 2 patents)

8.  Mitsuo Kishi (1 out of 1 patent)

9.  Takao Sawai (1 out of 1 patent)

10.  Takao Sasaki (1 out of 1 patent)

11.  Akio Ono (1 out of 1 patent)

12.  Giovanni Gaviraghi (1 out of 22 patents)

13.  Claudio Semeraro (1 out of 19 patents)

14.  Salvatore Cocozza (1 out of 6 patents)

15.  Roberto P Giani (1 out of 8 patents)


19 patents:

1. 11272727 - Method for extracting sea cucumber saponin-containing extract and method for maintaining constant content thereof (2022-03-15),
2. 4703054 - Nootropic imidazolidinones (1987-10-27),
3. 4632982 - Triphenylmethyl azo and hydrazino substituted pyridazines (1986-12-30),
4. 4581449 - Process of making (1986-04-08),
5. 4575552 - Process of making (1986-03-11),
6. 4530934 - Pharmaceutically active ursolic acid derivative (1985-07-23),
7. 4465831 - Ketoiminocephalosporin derivatives (1984-08-14),
8. 4324788 - Alkoxyalkylidenhydrazinopridazines and process for their preparation (1982-04-13),
9. 4173648 - 3.beta.-Hydroxy-18.beta.-olean-9-en-30-oic acids (1979-11-06),
10. 4173569 - Preparation of pyrrolidine and pyrrolidin-2-one derivatives (1979-11-06),
11. 4124594 - 4-Hydroxy pyrrolidin-2-onyl-amides (1978-11-07),
12. 4122111 - Carbamoylthiobenzamides and compositions comprising same (1978-10-24),
13. 4118396 - Pyrrolidine derivatives (1978-10-03),
14. 4086343 - Acylated hydrazinopyridazine antihypertensives (1978-04-25),
15. 4013075 - Inhalers and insufflators having a cutting means (1977-03-22),
Company Overview
Isf LLC is a technology-driven company based in Hokkaido, Japan, specializing in innovative solutions across various sectors. The organization focuses on developing advanced materials and engineering technologies, contributing to industries such as manufacturing and environmental sustainability. With a commitment to research and development, Isf LLC aims to enhance product performance and efficiency, leveraging cutting-edge methodologies to address contemporary challenges in technology and engineering.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

19 Patents

#5 in Hokkaido

#3,041 in Japan

#32,693 in the World

Hokkaido, JP
Hokkaido, Japan

Isf LLC

Forward Citations = 330

28 inventors:

goldMedal Giorgio Pifferi (12 out of 28 patents)

silverMedal Mario Pinza (9 out of 36 patents)

bronzeMedal Carlo Farina (5 out of 35 patents)

4.  Luciano Dorigotti (3 out of 5 patents)

5.  Francesco Parravicini (2 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Isf LLC. Retrieved from https://idiyas.com/company/isf

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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