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Official data from INPI

PROCESSO PARA PREPARAR DERIVADOS DE GLICOLURILA, SUBSTANCIALMENTE METILOLADOS E COMPOSIÇÕES POLIMÉRICAS POLIMÉRICAS RETICULÁVEIS CONTENDO OS MESMOS

ConcedidaInvention Patent

Application data

Number

PI7705806

Type

Invention Patent

Filing

08/31/1977

Publication

-

Progress at the INPI

  1. Filing08/31/77
  2. Publication
  3. Examination
  4. Allowance05/24/83
  5. Grant11/29/83
  6. Expired07/13/93

The letters patent expired on 07/13/1993: 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: 11/29/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

American Cyanamid Company

US

See this company's full portfolio

Inventors

G. P. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

721,008 · 09/07/1976

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/29/1983

RPI 684

Notificação para pagamento de retribuição

#13.1

09/27/1983

RPI 675

Deferimento

#9.1

05/24/1983

RPI 657

8.1

12/14/1982

RPI 634

6.2

12/29/1981

RPI 584

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: C07D 487/04; C08K 5/34; C09D 3/00.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

07/13/1993

RPI 1180

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