The DuPont nylon alliance (1951)
Buying technology from outside, and turning it into technology of one’s own
The heart of this decision is that Toyo Rayon, which had walked a single road of rayon, spent a technology-import fee worth one and a half times its capital to buy wholesale, from across the sea, the synthetic-fibre technology it lacked. For a fibre company so soon after the war, a $3 million prepayment was a bet that could not be allowed to fail, and it was no exaggeration when an in-house article wrote that it “bore on the company’s rise or fall.” Chairman Tashiro Shigeki spread the burden over five instalments and, guarding the advantage of moving first, concentrated on mass production — an arrangement resting on a realistic calculation for recovering the bet in a short span of years.
And out of this choice to buy technology from outside grew the self-reliance that would later become Toray’s byword. The DuPont contract was centred on a patent licence and handed over no mass-production technology, so Toyo Rayon had no choice but to raise manufacturing on its own. That very constraint rooted a culture of honing technology in-house rather than leaning on others, and later underwrote the carbon-fibre investment that endured forty years of losses. In 2014 Toray reversed that self-reliance to buy America’s Zoltek — but trace it back and the starting point lies in the 1951 choice to buy technology from outside. Where to obtain technology, and how to turn it into a foundation of one’s own: this remains the decision in which Toyo Rayon gave its first answer to that question.
Revenue and net margin, FY1946–FY1956
Revenue in ¥ bn (bars) and net margin in % (line), for the years around the decision. Shaded columns are FY1951 onwards — after it was taken.
Source: securities reports
Read the full dossier in Japanese →
The Japanese edition carries the complete record of this decision — the situation that forced it, the options weighed, what actually followed, and the sources behind every claim.
Other key decisions at Toray Industries
Yen amounts are converted at the average rate of each figure’s own year — not today’s rate; the revenue chart is shown in yen. Exchange rates & sources — the full ¥/US$ table →
Disclaimer
- This page is provided for general information only and is not investment advice, nor a recommendation to buy or sell any security.
- Figures are compiled independently and include our own estimates, approximations and machine-processed data; we make no warranty as to their accuracy or completeness.
- Sources are primarily each company’s securities reports and other public filings, but errors and omissions may remain.
- Any use of this information is at the reader’s own risk. Past performance does not indicate future results.
- Company names, logos and other marks belong to their respective owners.
Data API
Toray Industries’s history, financials, executives and
shareholders are published as static JSON — no key, plain GET.
Full specification →
| Method | Endpoint | Returns |
|---|---|---|
| GET | /api/companies.json | All companies |
| GET | /api/3402/manifest.json | Resource index |
| GET | /api/3402/history.json | History overview |
| GET | /api/3402/timeline.json | Chronology |
| GET | /api/decisions.json | All management decisions (index) |
| GET | /api/3402/decisions.json | Management decisions (index) |
| GET | /api/3402/decisions/{slug}.json | One decision (full dossier) |
| GET | /api/3402/executives.json | Executives |
| GET | /api/3402/shareholders.json | Major shareholders |
| GET | /api/3402/financials.json | Financial statements |
| GET | /api/3402/financials-longterm.json | Long-term results |
| GET | /api/3402/segments.json | Business segments |
| GET | /api/3402/regions.json | Sales by region |
| GET | /api/3402/workforce.json | Workforce |