Deep Tech Startups

Rainstick develops weather-event and biotech-related technology, drawing on hardware and software engineering. The page focuses on the team but indicates the company works at the intersection of agriculture, biotech, and transformative technology.

3 investors

Ramon.Space builds space-grade computing infrastructure, including digital payloads, data center infrastructure, space storage, and edge computing systems. Its technology targets computing, communications, and chip-level needs for space applications.

3 investors

Random Power develops true random number generators derived from silicon detector technology originally created for particle physics research at CERN. The company serves applications requiring high-quality random number generation, drawing on expertise from decades of detector development for fundamental science.

3 investors

A company that uses satellite data, IoT sensors, and drone inspection combined with AI analysis to assess structural risk and damage in buildings. The service delivers faster and more cost-effective facade and structural inspections compared to traditional methods.

3 investors

Rasyn.ai offers Marigold, an AI research assistant that lets scientists ask research questions, run tools, or delegate entire tasks, returning results such as structures, charts, code, and papers in panels. It provides 54 runnable tools, 40 executing on connected hardware and 14 on hosted endpoints.

3 investors

Readcoor developed an in situ spatial transcriptomics platform using padlock probe rolling circle amplification chemistry to detect and map RNA transcripts across tissue sections, now offered as the Xenium In Situ platform. It serves researchers analyzing gene expression at subcellular resolution, including in FFPE and degraded samples.

3 investors

Reasoner analyzes thousands of human behavioral and psychological signals — including what people say, choose, value, and avoid — to identify patterns unique to each individual. The product appears to focus on modeling emotional, cognitive, and social traits.

3 investors

Recludix Pharma operates a drug discovery platform that combines custom DNA-encoded libraries (DELs), massively parallel structure-activity relationship analysis, structure-based design, and a family-wide SH2 domain screening panel. It applies this approach first to discover selective SH2 domain inhibitors for treating inflammatory diseases.

3 investors

ReconLabs is a South Korean technology company focused on developing new technologies and products, with a team weighted toward R&D and graduate-level talent. The team page emphasizes its engineering and product-building focus but does not specify the product on this page.

3 investors

Rectify Pharma is a biotechnology company developing therapies, with a pipeline that has included work in liver and metabolic disease areas. This page profiles a member of its executive team.

3 investors

Related Sciences assembles distributed teams of academic experts and industry veterans to conduct specialized drug discovery and research for biotech companies. The company operates a decentralized R&D model where leading scientists work collaboratively on targeted therapeutic programs.

3 investors

Rendezvous Robotics develops self-assembling structures, including its TESSERAE technology, for building large structures and orbiting platforms in space. The company focuses on space-based infrastructure intended to enable scientific and medical research in zero gravity.

3 investors

rENIAC builds a Data Engine that acts as a drop-in database accelerator using FPGA, CPU and tiered storage (DRAM+SSD) to lower latency and increase throughput for SQL, NoSQL and Graph databases. It serves organizations with real-time, data-centric applications such as recommendation engines, online AI/ML models, fraud prevention and payment processing.

3 investors

Renkube develops AI-powered solar technology under the name Sunray Sculptors.

3 investors

Resonant Link Inc. developed wireless power technology and is no longer operating as an active business, now managing and licensing its patent portfolio for non-medical wireless power. Its medical device wireless power work continues through a related entity, Resonant Link Medical.

3 investors

Retro Biosciences is a biotechnology company focused on research aimed at extending healthy human lifespan. Its work is carried out by a team of scientists, entrepreneurs, and operators in the longevity space.

3 investors

Revel Pharmaceuticals develops enzyme-based therapeutics designed to recognize and reverse molecular damage that accumulates in the body's structural tissue — collagen, elastin, and extracellular matrix — targeting age-related damage that drives disease. The company screens natural enzyme variants against real substrates to identify and engineer them into treatments.

3 investors

RevivBio uses protein engineering and advanced microfluidics to develop biotechnology products.

3 investors

Rhea develops SPARROW, an autonomous navigation system for air, land, and sea vehicles that operates independently of GPS in denied environments using computational algorithms and optical sensors. The system provides position, navigation, and timing for military and mission-critical applications in GPS-denied or contested battlespaces.

3 investors

Rhonexum works on quantum computing technology, focusing on the technical challenges of controlling qubits that must be kept in cryogenic refrigerators far colder than room temperature.

3 investors

RIIICO builds products based on 3D intelligence, working with industrial companies to help them apply 3D technology, and develops these offerings through co-creation with global industry leaders.

3 investors

Riven develops a platform that combines autonomous laboratories, computational modeling, and AI to design, scale up, and operate critical mineral processing facilities. The company targets industrial mineral refining with the aim of rebuilding Western processing capacity.

3 investors

RLCore builds reinforcement-learning software that layers on top of existing industrial control systems to optimize process operations in real time. It targets sectors including chemical and process industries, data centers, industrial and municipal water treatment, and solar-plus-battery energy systems.

3 investors

Roofline develops an SDK for edge AI applications that enables developers to import and deploy models across diverse hardware using a Python interface and proprietary AI compiler technology.

3 investors