
| Manufacturers: Are you a manufacturer of … – turbines? – internal combustion engines (ICEs)? – trucks, buses, trains, ships? – mobile EV Chargers, or GPUs? – products needing fuel efficient on board electricity generation? Would you like to discuss porous turbines? Please find my contact details below. |
General information:
| E-mail: | info@frolundatech.com |
| Phone number: | +46 736589274 |
| Linkedin profile (Andreas Clark, CEO & owner): | https://www.linkedin.com/in/andreas-clark-27845029/ |
| About Frölunda Tech Holding AB | https://www.ratsit.se/5591930986-Frolunda_Tech_Holding_AB |
Patent application
(porous turbines):
| DESCRIPTION: | DOCUMENT NUMBER: | FILING DATE: |
| Priority application: | EP25153944 | 2025-01-24 |
| PCT application: | WO2025262339 | 2025-10-16 |
| WO2025262339 available as/at: | Link: |
| Full document (PDF) | https://lnkd.in/dZ4fe2gH |
| WIPO | https://lnkd.in/dZx95e5m |
| Espacenet | https://lnkd.in/dy9VBu8b |
| Google Patents | https://lnkd.in/dyFVK_bB |
Timeline:
| EVENT: | DATE: |
| Priority application (EP25153944) | 2025-01-24 |
| PCT application (WO2025262339) | 2025-10-16 |
| Sufficient time for writing national patent applications without needing rush-work. | 2027-04-24 (approximately) |
| Deadline (national patent applications) | 2027-07-24 (approximately) |
| One of the following two will have happened: (1) National patent applications have been filed. (2) The patent application has expired. | 2027-07-25 (approximately) |
Comparison of scenarios (hypothetization):
| WIKIPEDIA (cross-licensing): https://en.wikipedia.org/wiki/Cross-licensing | No further patent applications on porous turbines are filed by anyone | New patent applications become filed by others |
| Patent expires (2027-07-25) | (1) No patent license sales (revenues) (2) No cross-licensing necessary | (1) No patent license sales (revenues) (2) No cross-licensing possible |
| National patents become granted | (1) Patent license sales (revenues) (2) No cross-licensing necessary | (1) Patent license sales (revenues) (2) Cross-licensing possible |
Difference between
patent application &
previous technolgy
| Previous technology (GB408690A, steam turbine): – Steam flows one single loop around a rotor. https://worldwide.espacenet.com/patent/search/family/010282533/publication/GB408690A?q=pn%3DGB408690A |
| New technology (WO2025262339, steam turbine): – Steam flows two, or more loops around a rotor. https://worldwide.espacenet.com/patent/search/family/094382820/publication/WO2025262339A1?q=pn%3DWO2025262339A1 |

Why does the number of loops matter?
| (1) More loops mean … (2) a longer steam expansion distance … … through the porous metal. This means the following can be handled… (3) … higher pressure drops (ΔP). (4) … higher temperature drops (ΔT). This means this turbine type (porous turbine)… (5) … can compete with existing turbine types. This means this turbine type (porous turbine) in some cases will be… (6) … less good than existing turbine types. (7) … better than existing turbine types. Questions for the next step: – In which products will porous turbines perform better? – Will customers soon demand these products? – Which manufacturer will fill this demand? @ Manufacturers: Which manufacturer will be the fastest at identifying the products, where this new technology performs better (and adds more customer value)? – You? – Your competitors? |
Quick description of uses for
porous turbines:
| – Steam turbines. – Conversion of waste heat into electricity. – Useful for vehicles and electricity generation. |

Value added
(generalized description):
| VALUE ADDED TO CUSTOMER: (1) Improved fuel efficiency of: … ICEs (internal combustion engines), … gas turbines. (2) Autonomy away from charging points. (3) Other values (see examples further down). |

Patent licenses:
| Patent licenses: (1) Patents are valid during 20 years. (2) Do you believe porous turbines will add customer value during these 20 years? (3) If “yes”, then part of this value could generate patent license revenues. (4) If “yes”, then these patent license revenues would motivate investments. Deadline for filing national patent applications: – 2027-04-24 (this date avoids rush work) – 2027-07-24 (formal deadline) |

Value added:
(per specific product):
| HIGHLY ATTRACTIVE USES OF POROUS TURBINES (for generating electricity on board plug-in electric vehicles): |
| Application: | Comments: |
| Large ships | – Improved fuel efficiency. |
| Trucks (mobile emergency recharging of battery electric vehicles/trucks/buses/cars). | – Fuel efficient onboard electricity generation. – Autonomy beyond charging point network. |
| Heavy trucks, long-distance trucks. | Fuel efficient onboard electricity generation from locally available fuels. Allows truck to recharge out of range from regular charging points. |

| ATTRACTIVE USES OF POROUS TURBINES (for generating electricity on board plug-in electric vehicles): |
| Application: | Comments: |
| Coaches and buses (long distance). | Fuel efficient onboard electricity generation from locally available fuels. Allows truck to recharge out of range from regular charging points. |
| Non-electrified trains. | Improved fuel efficiency. |

| POSSIBLE USES OF POROUS TURBINES (for generating electricity on board plug-in electric vehicles): |
| Application: | Comments: |
| Trucks and buses (predetermined routes). | On board electricity generation –> –> Decreased battery size. |
| – Small electricity generating aggregates (24/7 use). (E.g. diesel aggregates) | Compact. |

| OTHER USES OF POROUS TURBINES (for generating electricity) (for generating electricity on board plug-in electric vehicles): |
| Application: | Comments: |
| Thermal power plants. | Possible once capital costs and operating costs have been perfected. |
| Rental cars (guaranteed range). | Guaranteed range outside charging point networks. |
| Taxis (guaranteed range). | Taxi always available – also when battery discharged. Guaranteed range outside charging point networks. |


Image & video showing how porous turbines work
| Description: | Link: |
| VIDEO (OVERSIMPLIFIED, 1 LOOP): Air flowing through fibrous layer on rotating cylinder | https://lnkd.in/g9PWmbGZ |
| DESCRIPTIVE IMAGE – COMPRESSED AIR FLOWING THROUGH POROUS ROTOR: US4669951A (1983) – Air operated motor | https://patentimages.storage.googleapis.com/70/37/33/972d8da2787e2f/US4669951-drawings-page-2.png |
Advertisement (all-images-in-one):
| File Format: | Download Link: |
| JPG | https://lnkd.in/dzkXZqMg |
| https://lnkd.in/duYngvsX |


Advertisement
(image of cylinder):
| File Format: | Download Link: |
| JPG | https://lnkd.in/d5MwXg6m |
| https://lnkd.in/dqKfTVPJ |


Advertisement
(use in rankine cycles):
| File Format: | Download Link: |
| JPG | https://lnkd.in/dtvjVrsQ |
| https://lnkd.in/dftywmtu |


Advertisement
(use in rankine cycles):
| File Format: | Download Link: |
| JPG | https://lnkd.in/dtvjVrsQ |
| https://lnkd.in/dftywmtu |
