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The WD-40 Company earns about 620 million dollars per year almost solely with one product and chose to protect the formula as a trade secret, not as a patent, turning a legal decision into a lasting market moat
Almost every garage in the world has a blue and yellow can of WD-40, but few see it as a textbook business strategy case. The secret formula of WD-40 has never been patented, and this is neither negligence nor folklore: it is a calculated business decision that helps explain why a company with basically one product is worth billions of dollars.
According to the WD-40 Company, the company earned about 620 million dollars in the last fiscal year, almost all coming from its main line. Listed on the American Stock Exchange, it chose to keep the formula as an indefinite trade secret, instead of patenting and having to reveal the composition.
An entire company living off a single product
The economic case starts with the dependence on just one item. According to the WD-40 Company, out of the total sales of 620 million dollars, about 591 million came from “maintenance products,” the core of WD-40. In other words, practically all revenue comes from a single product line, something rare and risky in the business world.
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Even so, the business thrives. The same WD-40 Company report shows earnings per share of 6.69 dollars, compared to 5.11 the previous year, and a quarterly dividend paid to the company’s shareholders, listed on Nasdaq under the code WDFC. Turning a single garage product into a valuable asset on the stock exchange is a feat of branding and distribution, not luck.
Why the secret formula of WD-40 was never patented
Here is the heart of the strategy. According to Klemchuk, a patent would give the company exclusivity, but only for about 20 years, and would require revealing the chemical composition in detail, allowing any competitor to copy the formula as soon as the patent expired.
The company made the opposite calculation. Instead of patenting, it treated the recipe as a trade secret, which has no expiration date and does not require revealing anything. As long as no one deciphers the formula, the protection lasts forever, far beyond what any patent would offer. It’s the same intellectual property logic used by famous soft drinks: for a recipe difficult to reproduce, silence protects more than registration.
The secret became a permanent competitive moat
The company itself admits that it took this choice to the extreme. According to the WD-40 Company, the formula is such a well-protected trade secret that the company never even filed for a patent, and the product has accumulated more than 2,000 documented uses.
This mystery has become not just protection but marketing. A product surrounded by secrecy arouses curiosity and loyalty, which reinforces the brand without advertising costs. Combined with the reputation of solving a thousand problems, the closed formula creates a double barrier: it is technically difficult to copy and too strong in the consumer’s mind, keeping the competition at bay for decades.
From war missile to garage item
The product’s origin reinforces the industrial side, not the folkloric. According to the WD-40 Company itself, the product was created in San Diego, in 1953, by the then Rocket Chemical Company, to prevent rust and corrosion on the outer shell of the Atlas missile, a central piece of the United States defense and space program.
The name carries its own technical history. The acronym comes from “Water Displacement”, and the number 40 marks the fortieth attempt until the formula worked, in a work credited to chemist Norm Larsen. A cutting-edge military engineering compound ended up migrating to the common consumer’s tool bench, when it was realized that it solved everyday problems. The product was born in heavy industry, not on the retail shelf.
Sold in more than 176 countries and territories
The distribution scale shows why a product only sustains so much. According to WD-40 Company itself, the group’s brands are sold in more than 176 countries and territories, a reach that few brands in any category achieve.
This penetration is the other pillar of the business, alongside the secret. Ensuring that a specific can is in almost every home, workshop, and factory on the planet is a logistical and branding feat as valuable as the formula itself. Becoming the generic name for an entire category, the lubricant that everyone asks for by nickname, is what guarantees the recurring revenue that appears in the financial statements.
Why keeping a secret can be worth more than patenting
The case of WD-40 is studied as an example of intellectual property strategy. Patenting is not always the best path: for formulas difficult to decipher by reverse engineering, keeping the secret can protect the business much longer than a patent, which expires and forces disclosure.
The risk exists, of course. If someone discovers the composition, the protection evaporates because industrial secrecy does not prevent copying by those who arrive at the formula on their own. But the company bet that the technical difficulty and brand strength would be worth more than the temporary exclusivity of a registration. History has proven that the bet was right, and today it is cited in business and law courses as a model case.
Why a common can became a business case
In the end, the story of WD-40 is less about a backstage mystery and more about how a smart business decision can sustain an empire. A product that was born to shield missiles became a billion-dollar company, protected less by chemistry and more by a well-thought-out intellectual property strategy.
It is proof that sometimes the most valuable asset of a company is not what it sells, but what it decides not to reveal. The next time you use that little can to loosen a screw, it’s worth remembering the business model behind it. Did you imagine that a decision about a patent could be worth billions?
