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Official data from INPI

APERFEIÇOAMENTO EM COMPOSIÇÃO DE POLÍMERO POLIOL, E EM COMPOSIÇÃO DE POLIISOCIANATO; E PROCESSO PARA PRODUZIR UMA POLIURETANA DE COR ESCURA, E PARA PRODUZIR UMA POLIURETANA MICROCELULAR DE COR ESCURA

Em AnáliseInvention Patent

Application data

Number

PI7704813

Type

Invention Patent

Filing

07/22/1977

Publication

-

Progress at the INPI

  1. Filing07/22/77
  2. Publication
  3. Examination
  4. Allowance09/04/84
  5. Grant03/26/85
  6. Terminated12/15/87

The patent was granted on 03/26/1985 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 12/15/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

U. C. (pessoa física)

US

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Inventors

W. G. (pessoa física)

Technical data

Priority claims

US

743.614 · 11/22/1976

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

12/15/1987

RPI 895

Concessão da patente

#16.1

03/26/1985

RPI 753

Notificação para pagamento de retribuição

#13.1

12/26/1984

RPI 740

Deferimento

#9.1

09/04/1984

RPI 724

Exigência - art. 36 da LPI

#6.1

01/10/1984

RPI 690

Exigência - art. 36 da LPI

#6.1

04/12/1983

RPI 651

6.2

02/24/1982

RPI 592

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