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Vinjamuri Net Zero Technology

Innovation & Patents

A long-running pursuit of practical pressure-vessel technology and its renewed path to market.

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INTELLECTUAL PROPERTY LIBRARY

Patented Engineering and Original Documents

Explore two issued U.S. patents and an earlier Indian filament-winding patent specification associated with Mr. Vinjamuri’s engineering work. Original documents are provided for reference.

First page of US Patent 8,474,647 B2
FIRST U.S. PATENT · GRANTED 2013

U.S. Patent 8,474,647 B2

One of the foundational U.S. patents in Mr. Vinjamuri's pressure-vessel innovation portfolio. The patent was granted in 2013.

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First page of US Patent 11,313,515 B1
2022 PATENT MILESTONE

U.S. Patent 11,313,515 B1

A subsequent issued U.S. patent in Mr. Vinjamuri's pressure-vessel technology portfolio, building on his long-standing engineering work.

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First page of Indian legacy patent specification 111958, filament winding machine
INDIAN PATENT HERITAGE · FILED 1967

Legacy Patent

Specification No. 111958 — A Filament Winding Machine for Fabrication of Filament-Wound Fibreglass Reinforced Plastic Cylinders.

Filed on August 16, 1967, and application accepted on January 21, 1969, this early Indian patent specification documents a filament-winding machine developed for manufacturing fibreglass-reinforced plastic cylindrical structures. The document identifies Gopala Vinjamuri among its inventors and the Council of Scientific & Industrial Research as the applicant.

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Patent documents are provided for technical reference. VNZT's current development activities and commercialization status should not be confused with product certification.

RESEARCH & TECHNICAL WORK

Publications & Technical Contributions

Explore the research and engineering contributions of VNZT's team, including publications, conference presentations, and technical reports. The founder's list below is transcribed from a supplied work-product document; bibliographic details and publication status have not been independently verified.

Dr. Rohan Parai

Research publications and citation information are available through the linked Google Scholar profile.

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Gopala Krishna Vinjamuri

Selected journal articles, proceedings, presentations, research reports, and other technical work are listed below, as described in the founder-provided document.

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  1. Greenhouse Gases: Issues and Solutions for the Transportation Sector\Visiting Lecture Series Institute of Eco Sciences, University of Maryland, College Park, MD, USA
  2. Finite Element Structural Analysis of Type III Composite CylinderInternal Report Vinjamuri Innovations LLC March 2021
  3. Ultr-Low Temperature, Composite Gas Tank for Bulk Compressed Gas TransportationIn Preparation Vinjamuri Innovations LLC December 2021
  4. Measuring Effectiveness of Pipeline In-Line AssessmentsOil and Gas Journal Part 1 April 17,2006, Part II May 8, 2006 (co-Author)
  5. Development of US Regulations for Hydrogen Transportation systems” Presented at the ASME Panel Forum on Challenges of Hydrogen Pipeline Transmission Systems- International Pipeline Conference & Exposition, Calgary, Canada (Criteria October 5, 2004)
  6. Material Selection and Performance for Hydrogen Pipeline Transmission” Proceedings of PVP 2004 International Conference 2004: ASME/JSME Pressure vessel & Piping Conference, (July 26,2004: co-author)
  7. Modeling Fatigue Behavior of Dents in Petroleum Pipelines” Paper presented at the ASME – Pressure Vessel Piping International Conference September 1998: co-author).
  8. ATMX System Safety Assessment Report” Report submitted to the Environmental and Safety Division, US Department of Energy (February 1989- co-author)
  9. Fracture Control Plan for the ATMX Rail Car Critical components” Report submitted to Environmental and Safety Division, Department of Energy, (March 1989- co-author)
  10. Stress Corrosion Cracking in Anhydrous Ammonia Storage Tanks” Paper presented to the NACE Committee on Stress Corrosion in Ammonia, ASME Pressure Vessel and Piping Conference, (1086)
  11. Hydrogen Attack of Carbon-1/2 Moly Piping in Ammonia Synthesis” Paper presented at the Corrosion--86 Conference, Published in Materials Performance July 1986 (co-author)
  12. Fitness for service and Inspection Criteria for DOT Specification 3AAX –2400 and 3T –2400 Cylinders” Report prepared for submission to the Research & Special Programs Administration, US Department of Transportation, Washington DC (September 1985)
  13. Engineering Application of Fracture Mechanics to Pressure vessel Safety assurance” ASME Paper 84 Mat 9. Paper presented at the ASME Symposium on the Industrial Application of Fracture Mechanics, San Antonio, Texas (June 1984, co-author)
  14. Periodic Inspection by Acoustic Emission- A toll for Pressure Vessel Structural Integrity assessment” paper presented at the International Congress on Technology and Technology exchange, , May3-6 1980.
  15. Fatigue and Fracture Behavior of Bridge Steels” Advances in Fracture Mechanics, Pergamon Press, 1980 (co-author)
  16. Fracture Behavior of A-36 Bridge Steels” Proceeding of the 12th International Conference of Fracture mechanics and fatigue, St Louis, MO. Published in ASTM STP 700, 1980 (co-author)
  17. Determination of Flaw Sizes in Full Size Welded Bridge Details” DOT Federal Highways administration Report # FHWA-RD-77-1970, 1980 (co-author)
  18. The Role of Acoustic Emission in Pressure Vessel failure Prevention” Paper presented at the Society for Experimental Stress Analysis- 1979 Spring Meeting, San Francisco, CA (May 1979)
  19. An Alternate Measure of Fracture Toughness” Journal of Engineering Fracture Mechanics, Vol. 9 PP 87-93, September 1977 (co-author)
  20. Fracture of Bridge Steels” Proceedings of 10th National symposium of Fracture Mechanics. ASTM STP 631, 1976 (co-author)
  21. Cryogenic System Design for a Toroidal, Separated Shock Theta-Pinch System” Cryogenics Consultants Inc Allentown Pa. Report prepared for Los Alamos National Laboratory, Fusion Power Research Division. Report # LP4-399973-2, 1974 (co-author)
  22. Cryogenic System Design for a Toroidal, Separated Shock Theta-Pinch System” Cryogenics Consultants Inc Allentown Pa. Report prepared for Los Alamos National Laboratory, Fusion Power Research Division. Report # LP4-399973-1, 1974 (co-author)
  23. Fracture Toughness of Bridge Steels” US DOT Federal Highway Administration Report FHWA-RD-74-59, 1973 (co-author)
  24. Flat Plate Testing of Part-Through Cracks in Line-Pipe Steels” , Fritz Engineering Lab report #371-1 1973 (co-author)
  25. An Indigenous Design of an Experimental Filament Winding Machine: National Aeronautical Lab. Tech Report 1966
  26. Shear Modulus of Boron filaments” NASA TN X1246 Langley Research center Hampton VA (September 1966, co-author)
INVENTOR HERITAGE

From an Early Patent to a New Company

Mr. Vinjamuri’s engineering innovation heritage includes an Indian filament-winding patent specification filed in 1967, followed by U.S. patents granted in 2013 and 2022. Motivated by India's demand for alternative fuels, he initially sought to introduce his technology there.

Despite sustained efforts, commercialization in India did not achieve his original objectives. He later redirected his efforts toward the United States and founded Vinjamuri Net Zero Technology Inc. in 2026.

Today, the company is exploring how this technical heritage can support practical Type 3 composite-cylinder manufacturing for industrial applications.

Patent verification: Patent numbers, filing dates, grant dates, claim scope, and ownership should be verified against official records before publishing a formal patent portfolio.

Innovation Priorities

Our development work focuses on metallic liner architecture, separately manufactured end-cap concepts, filament winding, composite material selection, manufacturability, and pressure-vessel validation.