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Official data from INPI

PROCESSO PARA A PREPARAÇÃO DE RESORCINOL

PublicadaInvention Patent

Application data

Number

PI8806828

Type

Invention Patent

Filing

12/22/1988

Publication

08/29/1989

Progress at the INPI

  1. Filing12/22/88
  2. Publication08/29/89
  3. Examination03/26/91
  4. Allowance03/26/96
  5. Grant03/25/97
  6. Expired09/02/08

The letters patent expired on 09/02/2008: 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: 08/29/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

I. C. (pessoa física)

US

Indspec Technologies Limited

US

Inventors

C. W. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

136.316 · 12/22/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

08/29/1989

RPI 984

Pedido de patente depositado

#2.1

04/18/1989

RPI 965

Carta-patente expirada

#21.1

Patente extinta em 22/12/2003

09/02/2008

RPI 1965

14.1

04/22/1997

RPI 1377

Concessão da patente

#16.1

03/25/1997

RPI 1373

Deferimento

#9.1

03/26/1996

RPI 1321

Exigência - art. 36 da LPI

#6.1

01/31/1995

RPI 1261

Solicitação de exame técnico

#4.1

03/26/1991

RPI 1060

14.1

09/04/1990

RPI 1031

14.4

08/28/1990

RPI 1030

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