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Official data from INPI

4,4-DIFENILÉTER-DIALDEÍDO-BIS-DIMETILACETAL E UM PROCESSO PARA SUA PREPARAÇÃO.

ConcedidaInvention Patent

Application data

Number

PI8108376

Type

Invention Patent

Filing

12/23/1981

Publication

10/13/1982

Progress at the INPI

  1. Filing12/23/81
  2. Publication10/13/82
  3. Examination08/28/84
  4. Allowance07/08/86
  5. Grant03/17/87
  6. In force12/23/01

The patent was granted on 03/17/1987 and is in force until 12/23/2001. Until then, no one may make, use or sell the invention in Brazil without the owner's authorisation.

Protection valid until:12/23/2001

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Latest action published by the INPI: 04/28/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

H. A. (pessoa física)

DE

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Inventors

S. H. (pessoa física)

Technical data

Priority claims

DE

P 30 48 992.0 · 12/24/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Republicação - classificação IPC

#15.11

04/28/1987

RPI 862

Concessão da patente

#16.1

03/17/1987

RPI 856

Notificação para pagamento de retribuição

#13.1

11/04/1986

RPI 837

Deferimento

#9.1

07/08/1986

RPI 820

Exigência - art. 36 da LPI

#6.1

04/16/1985

RPI 756

Solicitação de exame técnico

#4.1

08/28/1984

RPI 723

Publicação do pedido de patente

#3.1

10/13/1982

RPI 625

Pedido de patente depositado

#2.1

02/16/1982

RPI 591

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