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Official data from INPI

PROCESSO PARA PRODUZIR UM ÉSTER METACRÍLICO

PublicadaInvention Patent

Application data

Number

PI8801821

Type

Invention Patent

Filing

04/15/1988

Publication

11/16/1988

Progress at the INPI

  1. Filing04/15/88
  2. Publication11/16/88
  3. Examination11/27/90
  4. Allowance04/02/96
  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: 11/16/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Nippon Shokubai Kagaku Kogyo Co., Ltd.

JP

See this company's full portfolio

Inventors

H. Y. (pessoa física)

JP

M. B. (pessoa física)

JP

M. U. (pessoa física)

JP

S. M. (pessoa física)

JP

Technical data

IPC Classification

Priority claims

JP

195,347/87 · 08/06/1987

JP

91,932/87 · 04/16/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

11/16/1988

RPI 943

Pedido de patente depositado

#2.1

08/30/1988

RPI 932

Carta-patente expirada

#21.1

Patente extinta em 15/04/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

03/25/1997

RPI 1373

Deferimento

#9.1

04/02/1996

RPI 1322

Exigência - art. 36 da LPI

#6.1

02/21/1995

RPI 1264

Solicitação de exame técnico

#4.1

11/27/1990

RPI 1043

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