KEYSTONE TOWER SYSTEMS, INC.
Segmented flange validation systems for large-diameter wind turbine towers
- Sector
- Energy
- Founded
- 2010
- Total capital
- $699K
- Federal grants
- $699K
- 3 awards · 2014–2016
- Rank in peer group#12 of 25
- Private capital raised
- None on recordNo Form D filings on SEC EDGAR. Some raises are not filed.
- Federal contracts
- None on recordNo federal contract awards found.
- Granted patents
- 32
- 8 pending · first 2016
- Rank in peer group#2 of 25
Capital timeline
Latest events
- Federal grantAgriculture · Validation Of Segmented Flanges For Large Diameter Wind Turbine Towers$600K
- Federal grantAgriculture · Mobile Factory Design For On-site Wind Turbine Tower Production$100K
Node area is scaled to amount. Form D reports securities sold, which can differ from an announced round; filings are numbered in the order they were made.
1 record has no date or no amount, so it isn’t placed on the timeline.
Standing among 25 peers
Line = medianEnergy · Instrument
- Federal grants#12 · top 48%
- Granted patents#2 · top 8%
Cumulative measures favor older companies. Rankings describe position today, not outcome. Below the median, ranks show as a band rather than a number.
Founders and team
No founders are linked to this company yet.
Founders appear once a person is matched to the company through its own patents, grants or filings. We never infer people from social profiles.
Checked: USPTO inventors; federal award principal investigators; SEC Form D related persons · Oct 23, 2026
Claim this profile to add your teamWhat it has protected
USPTO · 32 granted of 40- GrantedFlange Fitting For Tubular StructuresUSPTOUS 12,649,205
- GrantedSpiral FormingUSPTOUS 12,629,738
- GrantedWind Turbine Tower AttachmentUSPTOUS 12,529,265
Show all 40 patent records
- Flange Fitting For Tubular StructuresJun 9, 2026 · US 12,649,205Granted
- Spiral FormingMay 19, 2026 · US 12,629,738Granted
- Wind Turbine Tower AttachmentJan 20, 2026 · US 12,529,265Granted
- Tubular Structure ReinforcingMay 13, 2025 · US 12,297,951Granted
- Control System And Method For Tapered Structure ConstructionMar 25, 2025 · US 12,257,616Granted
- Sheet Transitioning In Spiral Formed StructuresMar 4, 2025 · US 12,240,025Granted
- Tapered Structure ConstructionFeb 18, 2025 · US 12,226,813Granted
- Flange Fitting For Tubular StructuresJan 30, 2024 · US 11,883,907Granted
- Tapered Spiral Welded StructureDec 5, 2023 · US 11,834,856Granted
- Spiral FormingAug 22, 2023 · US 11,731,181Granted
- Wind Turbine Tower AttachmentJun 27, 2023 · US 11,686,155Granted
- Tube StiffeningFeb 14, 2023 · US 11,577,292Granted
- Tapered Structure ConstructionFeb 7, 2023 · US 11,571,727Granted
- Cylindrical Tube FormationJan 24, 2023 · US 11,559,832Granted
- Sheet Transitioning In Spiral Formed StructuresDec 20, 2022 · US 11,529,661Granted
- Control System And Method For Tapered Structure ConstructionJun 21, 2022 · US 11,364,527Granted
- Spiral FormingJan 4, 2022 · US 11,213,872Granted
- Flange Fitting For Tubular StructuresNov 30, 2021 · US 11,185,952Granted
- Tapered Structure ConstructionApr 13, 2021 · US 10,974,298Granted
- Tapered Spiral Welded StructureJan 19, 2021 · US 10,895,088Granted
- Sheet Transitioning In Spiral Formed StructuresOct 20, 2020 · US 10,807,136Granted
- Cylindrical Tube FormationJul 21, 2020 · US 10,717,122Granted
- Wind Turbine Tower AttachmentApr 21, 2020 · US 10,626,672Granted
- Spiral FormingDec 3, 2019 · US 10,493,509Granted
- Sheet Transitioning In Spiral Formed StructuresNov 26, 2019 · US 10,486,212Granted
- Sheet Transitioning In Spiral Formed StructuresFeb 12, 2019 · US 10,201,841Granted
- Tapered Structure ConstructionFeb 5, 2019 · US 10,195,653Granted
- Control System And Method For Tapered Structure ConstructionJan 29, 2019 · US 10,189,064Granted
- Cylindrical Tube FormationDec 11, 2018 · US 10,150,150Granted
- Tapered Spiral Welded StructureAug 28, 2018 · US 10,060,149Granted
- Tapered Spiral Welded StructureOct 25, 2016 · US 9,475,153Granted
- Tapered Structure ConstructionApr 5, 2016 · US 9,302,303Granted
- Spiral FormingApplication PCTUS2016039214Pending
- System To Assure Good Fit-up In Conical And Cylindrical Spiral Formed StructuresApplication 62185064Pending
- Control System And Method For Tapered Structure ConstructionApplication PCTUS2015022648Pending
- Sheet Transitioning In Spiral Formed StructuresApplication PCTUS2017049612Pending
- Flange Fitting For Tubular StructuresApplication 62696717Pending
- Cylindrical Tube FormationApplication PCTUS2018013630Pending
- Wind Turbine Tower AttachmentApplication PCTUS2018013217Pending
- Tube StiffeningApplication PCTUS2018012489Pending
Related companies, and why
- Distill Energy IncSimilar federal contract value in Energy · null in contracts
- Octavia Technologies, Inc.Similar federal contract value in Energy · null in contracts
- Exacter, Inc.Similar federal contract value in Energy · null in contracts
- STRATOFIRE LCSimilar federal contract value in Energy · null in contracts
- California Wave Power Technologies, LLCSimilar federal contract value in Energy · null in contracts
- Hexalayer, LLCSimilar federal contract value in Energy · null in contracts
Regulatory activity · Energy
- Air Plan Approval; Michigan; Redesignation and Maintenance Plan for the Partial St. Clair 2010 1-Hour Sulfur Dioxide (SO2) NAAQS Nonattainment AreaEnvironmental Protection Agency
- Air Plan Approval; Delaware; 2006 24-Hour Fine Particulate Matter Limited Maintenance Plan for the Philadelphia Nonattainment AreaEnvironmental Protection Agency
- Air Plan Approval; Oklahoma; Updates to the State Implementation Plan for New Source Review Permitting and General SIP ProvisionsEnvironmental Protection Agency
- List of Approved Spent Fuel Storage Casks: NAC International, Inc., MAGNASTOR® Storage System, Certificate of Compliance No. 1031, Amendment Nos. 16 and 17 and Revisions to Amendment Nos. 0 Through 16Nuclear Regulatory Commission
- Epyrifenacil; Pesticide TolerancesEnvironmental Protection Agency
- Fluoxapiprolin; Pesticide TolerancesEnvironmental Protection Agency
Rules are matched to sector, not to company. Recent activity in a sector is context rather than a signal about this business — until rules are matched to what a company actually builds, the section is shown as context and nothing more.
Sources
Federal grants from SBIR/STTR, NIH, NSF and DoD records. Federal contracts from USAspending.gov. Private capital from SEC Form D. Patents from USPTO. Publications from OpenAlex. Regulatory activity from the Federal Register. Press matched on company name.
How to read this page
Figures show associations in public records, not causes or predictions. Nothing here is investment advice. An em-dash means no record was found under this company's name, not that none exists.
Data freshness
SEC Form D filings through . SBIR and STTR awards through .