Hardware Startups

RBC Bearings is an international manufacturer and marketer of engineered precision bearings and related products, serving industrial, aerospace, and defense customers. Founded in 1919, it operates manufacturing and distribution facilities across the US, Mexico, France, Germany, Poland, and China, and offers a B2B ordering portal for customers.

2 investors

Re:Build Manufacturing operates a network of specialized manufacturing facilities across the United States, providing design, engineering, prototyping, and production services for embedded systems, composites, chemical processes, and medical consumables. The company supports product development at scale with over 1,200 technical experts and advanced manufacturing capacity.

2 investors

Reason Robotics builds technology to make deploying industrial robots easier, targeting small and medium-sized manufacturers in the United States to automate dangerous and repetitive tasks. The company focuses on accelerating automation for SMB manufacturers so workers can shift to more engaging work.

2 investors

Recor Medical develops the Paradise Ultrasound Renal Denervation system, a therapy that uses ultrasound technology to lower blood pressure in patients with hypertension. Founded in 2009 and now part of Otsuka Medical Devices, the company brings its hypertension treatment to physicians and patients worldwide.

2 investors

Redcliff operates and manages large-scale drone light shows in Japan, holding the country's largest fleet of show drones. The company provides drone entertainment services and reports the leading market share for drone show revenue in Japan.

2 investors

ReEnvision Ag develops a cone-shaped dibble planting system called SeedSpike™ that enables farmers to plant seeds with greater precision and in more diverse soil conditions. The system reduces soil compaction, widens the planting window, and increases yield potential while supporting regenerative agriculture practices for family farms.

2 investors

Refamo provides fatigue assessment technology for welded steel structures and assets operating under dynamic loads, enabling lifecycle monitoring and durability optimization.

2 investors

Reflex Aerospace manufactures rapid-delivery, customizable satellite platforms for commercial and government missions, leveraging advanced manufacturing techniques to reduce development timelines. The company serves mission operators and payload integrators globally with ESPA-class, ITAR-free satellite solutions capable of supporting complex payloads.

2 investors

Relativity Networks develops Hollow Core Fiber (HCF) optics that replace glass with air to move data nearly 50% faster, reducing latency over distance. The technology targets hyperscalers and data center operators, allowing them to build facilities in power-rich or renewable-energy locations away from constrained urban grids.

2 investors

Remora Robotics develops autonomous underwater robots for cleaning and inspecting fish farming cages, reducing manual labor and improving farming conditions. The company serves aquaculture operators in Norway and internationally with patented robotic technology.

2 investors

Repairify combines original equipment manufacturer (OEM) and aftermarket tools, diagnostic data, and analytics to simplify vehicle repairs for automotive repair shops and technicians. The platform provides remote diagnostic support and actionable vehicle insights to improve repair workflows, performance, and safety across the automotive repair industry.

2 investors

RESONIKS provides AI-powered non-destructive testing that uses acoustic resonance analysis to detect cracks, pores, weld flaws and structural faults in manufactured parts. It serves industrial manufacturers, integrating into production lines to speed up inspections and improve quality control.

2 investors

SinuSauna is a consumer respiratory wellness device that delivers heated dry air therapy through a face mask to relieve and help prevent nasal congestion from colds and seasonal allergies. Marketed as a general wellness product, it is intended to keep nasal passages clear and improve sleep quality.

2 investors

RESTUBE manufactures inflatable swim buoys designed for open water swimmers to enhance safety, visibility, and buoyancy. The product is marketed for recreational swimmers, triathletes, and professional athletes who need lightweight flotation and emergency support during water activities.

2 investors

Revamp Moto manufactures modular electric vehicles with attachments and accessories, along with associated services like micro-financing and mentorship, targeting grassroots entrepreneurs and micro-business owners in India.

2 investors

Revasum designs and manufactures capital equipment—including grinding, polishing, and CMP tools such as the 6EZ Silicon Carbide Polisher and 7AF-HMG Silicon Carbide Grinder—used to produce substrates and devices for the semiconductor industry. It serves semiconductor device manufacturers, with a focus on processing silicon carbide (SiC) wafers 200mm and below.

2 investors

ReviMo develops Niko, a mobility assistance device that helps individuals with limited mobility transfer, move, and elevate to a standing level, reducing dependence on caregivers. The device targets patients with limited mobility and their caregivers, and is subject to FDA approval.

2 investors

Revolights makes wheel-mounted 360° bicycle lighting systems that function as a legal headlight, smart brakelight, and side visibility for urban cyclists. The lights fit 700c and 27" road and commuter bike wheels, use a removable Micro-USB rechargeable battery pack, and are made from weather-resistant Zytel material.

2 investors

Revolve Robotics develops inspection, surveillance, and maintenance robots for hard-to-reach industrial environments, with applications in inspection, construction, security, public safety, and defense sectors. The company combines expertise in drone technology with robotics engineering to create mobile robots for previously inaccessible spaces.

2 investors

Revolv was a connected-home (smart home) product consisting of an app and hub; the service has been discontinued and the page now only offers refunds for the Revolv hub via Nest support.

2 investors

Revolve develops a surgical robotics platform with 5mm wristed instruments and zero-footprint design for operating rooms, enabling digital surgery at costs comparable to laparoscopy. The system is designed for access across independent outpatient centers and large health networks.

2 investors

REZA designs and manufactures premium sneakers that integrate laser diode and LCD lighting technology with high-end fashion, targeting consumers who prioritize design, comfort, and durability in footwear.

2 investors

Murata is an electronics component manufacturer that supplies parts such as connectivity modules and chip ferrite beads, and provides supporting tools like simulation software and component data. It serves customers in the electronics industry for product planning, development, and implementation.

2 investors

RGo Robotics develops computer vision and AI perception technology, using sensor fusion to give mobile machines human-level spatial understanding of their surroundings in real time. Its perception platform targets robotics applications such as AGVs/AMRs and UAVs across logistics, manufacturing, cleaning, delivery, and security in settings like hotels, hospitals, and homes.

2 investors