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Official data from INPI

PROCESSO PARA PREPARAR PEROXIÉSTERES DE HIDROXI-T-ALQUILA

ConcedidaInvention Patent

Application data

Number

PI8400656

Type

Invention Patent

Filing

02/15/1984

Publication

02/05/1985

Progress at the INPI

  1. Filing02/15/84
  2. Publication02/05/85
  3. Examination03/24/87
  4. Allowance11/29/88
  5. Grant09/26/89
  6. Expired07/08/08

The letters patent expired on 07/08/2008: 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: 09/26/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Atochem North America, Inc.

US

See this company's full portfolio

Inventors

J. S. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

496,357 · 05/20/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/26/1989

RPI 988

Notificação para pagamento de retribuição

#13.1

04/25/1989

RPI 966

Deferimento

#9.1

11/29/1988

RPI 945

Exigência - art. 36 da LPI

#6.1

06/28/1988

RPI 923

Solicitação de exame técnico

#4.1

03/24/1987

RPI 857

Publicação do pedido de patente

#3.1

02/05/1985

RPI 746

Pedido de patente depositado

#2.1

05/02/1984

RPI 706

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: C07C 179/18; C08F 4/36; C08F 4/34.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

Patente extinta em 15/02/99

07/08/2008

RPI 1957

20.4

11/05/1991

RPI 1092

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