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Official data from INPI

PROCESSO PARA A PREPARAÇÃO DE POLÍMEROS

Arquivada/ExtintaInvention Patent

Application data

Number

PI9001232

Type

Invention Patent

Filing

03/12/1990

Publication

03/26/1991

Progress at the INPI

  1. Filing03/12/90
  2. Publication03/26/91
  3. Examination06/22/93
  4. Allowance08/31/99
  5. Grant05/30/00
  6. Expired01/08/13

The letters patent expired on 01/08/2013: 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: 01/08/2013. 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

B. W. (pessoa física)

US

G. M. (pessoa física)

US

W. R. (pessoa física)

US

Technical data

Priority claims

US

322.443 · 03/13/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 30/05/2010

01/08/2013

RPI 2192

Concessão da patente

#16.1

05/30/2000

RPI 1534

Deferimento

#9.1

08/31/1999

RPI 1495

Exigência - art. 36 da LPI

#6.1

09/15/1998

RPI 1447

Exigência - art. 36 da LPI

#6.1

04/14/1998

RPI 1425

Exigência - art. 36 da LPI

#6.1

11/12/1996

RPI 1354

Solicitação de exame técnico

#4.1

06/22/1993

RPI 1177

Publicação do pedido de patente

#3.1

03/26/1991

RPI 1060

Pedido de patente depositado

#2.1

07/24/1990

RPI 1025

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