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12 August 2026

Patents that changed industries

These historical examples of patents provide useful context for understanding the role of intellectual property rights and technological innovation in industrial development, though they are too general to be the subject of a direct question.

1 min read 1 questions 2 prelims

Notes

  • Nikola Tesla received a patent on May 1, 1888, for an induction motor using a rotating magnetic field, facilitating AC power transmission.
  • Eli Whitney was granted a patent on May 14, 1794, for the cotton gin, which increased production but entrenched slavery in the US.
  • George Eastman (Kodak) patented a handheld roll-film camera in 1888, democratizing photography.
  • Chester Carlson patented electrophotography (P) on October 6, 1942; commercialized by Joseph Wilson, leading to the Xerox (Q) brand.
  • Stephanie Kwolek discovered Kevlar in 1972, a high-strength polymer fiber used in bulletproof vests and aerospace.

Questions

  1. Discuss the role of intellectual property rights in fostering industrial innovation, with reference to historical technological breakthroughs. 150 words
    Attempt this โ€” 150 words in 8 min
    0 / 150 words 8:00

Prelims

  1. Which of the following inventions, patented in 1888, was instrumental in the widespread adoption of alternating current (AC) power systems?

  2. Stephanie Kwolek is credited with the discovery of which high-strength polymer fiber, originally described as optically anisotropic aromatic polyamide dopes?