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Official data from INPI

PROCESSO PARA A PRODUÇÃO DE UM COMPOSTO DE URETANO, PROCESSO PARA A PREPARAÇÃO DE UM COMPOSTO DE DIISOCIANATO, E, COMPOSIÇÃO CURÁVEL

PublicadaInvention Patent

Application data

Number

PI8705872

Type

Invention Patent

Filing

11/03/1987

Publication

06/14/1988

Progress at the INPI

  1. Filing11/03/87
  2. Publication06/14/88
  3. Examination10/16/90
  4. Allowance08/08/95
  5. Grant03/26/96
  6. Expired07/29/08

The letters patent expired on 07/29/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 06/14/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

American Cyanamid Company

US

See this company's full portfolio

Inventors

L. N. (pessoa física)

US

V. A. (pessoa física)

US

Technical data

Priority claims

US

926,071 · 11/03/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

06/14/1988

RPI 921

Pedido de patente depositado

#2.1

03/01/1988

RPI 906

Carta-patente expirada

#21.1

Patente extinta em 03/11/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

03/26/1996

RPI 1321

Deferimento

#9.1

08/08/1995

RPI 1288

Exigência - art. 36 da LPI

#6.1

10/25/1994

RPI 1247

Solicitação de exame técnico

#4.1

10/16/1990

RPI 1037

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