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Official data from INPI

PROCESSO PARA A PREPARAÇÃO DE UM PRODUTO DE REAÇÃO FENÓLICO POLIFUNCIONAL.

Em ExigênciaInvention Patent

Application data

Number

PI8504999

Type

Invention Patent

Filing

01/30/1985

Publication

01/21/1986

Progress at the INPI

  1. Filing01/30/85
  2. Publication01/21/86
  3. Examination11/24/87
  4. Allowance09/14/93
  5. Grant03/29/94
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 11/07/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Dow Chemical Company

US

See this company's full portfolio

Inventors

D. K. (pessoa física)

DE

R. K. (pessoa física)

FR

Technical data

Priority claims

DE

P 34 03 171.5 · 01/31/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Exigência - art. 36 da LPI

#6.1

11/07/1989

RPI 994

Solicitação de exame técnico

#4.1

11/24/1987

RPI 892

Notificação de entrada na fase nacional - PCT

#1.3

01/21/1986

RPI 796

Carta-patente expirada

#21.1

Patente extinta em 30/01/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

03/29/1994

RPI 1217

Deferimento

#9.1

09/14/1993

RPI 1189

Exigência - art. 36 da LPI

#6.1

01/28/1992

RPI 1104

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