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Official data from INPI

PROCESSO PARA A PREPARACAO DE ALQUILAMINAS E SISTEMA CATALITICO

ConcedidaInvention Patent

Application data

Number

PI8101331

Type

Invention Patent

Filing

03/06/1981

Publication

10/13/1981

Progress at the INPI

  1. Filing03/06/81
  2. Publication10/13/81
  3. Examination11/22/83
  4. Allowance04/16/85
  5. Grant10/29/85
  6. Expired09/24/96

The letters patent expired on 09/24/1996: 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: 10/29/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Atochem North America, Inc.

US

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Inventors

C. R. (pessoa física)

G. D. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/29/1985

RPI 784

Notificação para pagamento de retribuição

#13.1

08/06/1985

RPI 772

Deferimento

#9.1

04/16/1985

RPI 756

Exigência - art. 36 da LPI

#6.1

08/28/1984

RPI 723

Solicitação de exame técnico

#4.1

11/22/1983

RPI 683

Publicação do pedido de patente

#3.1

10/13/1981

RPI 573

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: C07C 87/10; B01J 23/74.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

09/24/1996

RPI 1347

20.4

10/15/1991

RPI 1089

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